# RECORD c98a43acf9eb55645cbcf1d65650ddce2b8ab2c6 # TITLE: The social value of a ridesharing platform: a hedonic pricing approach # YEAR: 2022.0 VENUE: Empirical Economics DOI: 10.1007/s00181-022-02310-9 # AUTHORS: Yongwook Paik; C. Makridis # PAGES: 26 CANDIDATE TABLE PAGES (1-based): [11, 16, 17, 18, 19] # ABSTRACT: Governments around the world have been facing the challenges of regulating the ever-increasing prevalence of ridesharing platforms, leading to a proliferation of academic and policy debates about the social value of such platforms. However, the overall social value is still unclear because when analyzing the net benefit provided by ridesharing platforms, prior studies have focused on either supply side (i.e., drivers) or demand side (i.e., passengers) users without considering nonusers. Conversely, some studies that have considered the spillover effect of a ridesharing platform on nonusers have not simultaneously considered the net benefit for users. In this study, we propose that a hedonic pricing model can be used as a reasonably straightforward approach to collectively quantify the social value of a ridesharing platform for both users and nonusers. Using this approach, we exploit plausibly exogenous variation in the staggered entry of Uber into different metropolitan areas between 2010 and 2016 and find that the entry of Uber leads to, on average, a 2.8% increase in median housing prices per square foot within a metropolitan area. We also find that there is substantial spatial heterogeneity, with benefits concentrated in areas with greater dependence on public transportation and higher levels of traffic delay. By quantitatively computing the social value of a ridesharing platform with a hedonic pricing model, our study helps government regulators generate policies that are more likely to promote public welfare and become less susceptible to political whims. ===== PAGE 1 (score 7, numeric-paren 0, table-words 0, var-words 7) ===== Empirical Economics (2023) 64:2125–2150 https://doi.org/10.1007/s00181-022-02310-9 The social value of a ridesharing platform: a hedonic pricing approach Yongwook Paik1 · Christos A. Makridis2 Received: 15 June 2021 / Accepted: 13 September 2022 / Published online: 25 September 2022 © The Author(s) 2022 Abstract Governments around the world have been facing the challenges of regulating the ever- increasing prevalence of ridesharing platforms, leading to a proliferation of academic and policy debates about the social value of such platforms. However, the overall social value is still unclear because when analyzing the net benefit provided by ridesharing platforms, prior studies have focused on either supply side (i.e., drivers) or demand side (i.e., passengers) users without considering nonusers. Conversely, some studies that have considered the spillover effect of a ridesharing platform on nonusers have not simultaneously considered the net benefit for users. In this study, we propose that a hedonic pricing model can be used as a reasonably straightforward approach to collec- tively quantify the social value of a ridesharing platform for both users and nonusers. Using this approach, we exploit plausibly exogenous variation in the staggered entry of Uber into different metropolitan areas between 2010 and 2016 and find that the entry of Uber leads to, on average, a 2.8% increase in median housing prices per square foot within a metropolitan area. We also find that there is substantial spatial heterogeneity, with benefits concentrated in areas with greater dependence on public transportation and higher levels of traffic delay. By quantitatively computing the social value of a ridesharing platform with a hedonic pricing model, our study helps government reg- ulators generate policies that are more likely to promote public welfare and become less susceptible to political whims. Keywords Platform · Hedonic pricing · Social value · Ridesharing · Uber Yongwook Paik and Christos A. Makridis have equal contribution and are listed in random order. B Yongwook Paik ywpaik@kaist.ac.kr Christos A. Makridis cmakridi@stanford.edu 1 KAIST College of Business, Korea Advanced Institute of Science and Technology, 85 Hoegiro, Dongdaemoon-gu, Seoul 02455, Korea 2 Stanford University, 210 Panama Street, Stanford, CA 94305, USA 123 ===== PAGE 11 (score 22, numeric-paren 0, table-words 6, var-words 8) ===== The social value of a ridesharing platform: a hedonic pricing approach 2135 Table 1 Characterizing the quasi-random nature of Uber entries into metropolitan areas. Sources: Census Bureau, Zillow, Quarterly Census of Employment and Wages, 2010–2016. The table reports the coefficients associated with logit regressions of Uber’s entry (at a metro × month frequency) on housing price per square foot, employment growth, and wage growth conditional on year and month fixed effects and a range of metro × year demographics, including logged population, the share of males, the age distribution (0–17, 18–34, 35–64), the race distribution (the share of African Americans), the share of married individuals, and the education distribution (no high school, high school, some college, college). The table shows that contemporaneous and one-year lagged housing prices, employment, and wage growth do not predict Uber’s entry into a metro area. Standard errors are clustered at the metro level and are shown using brackets Dependent variable = Uber entry into area (1) (2) Housing price growtht −2.86 −6.11 [2.15] [4.74] Employment growtht 2.50 3.36 [4.08] [3.72] Wage growtht 0.21 0.33 [1.89] [1.55] Housing price growtht-1 1.95 [3.08] Employment growtht-1 −0.57 [1.97] Wage growtht-1 −0.14 [1.05] R-squared 0.76 0.76 Sample size 9347 9232 Metro controls Yes Yes Year + month FE Yes Yes 4 Results 4.1 Net effect of Uber on local property values Table 2 presents our main results associated with Eq. (1) when our outcome variable is logged median housing prices per square foot at the zip code level. Not surprisingly, the cross-sectional estimator suggests that there is a strong positive correlation between the areas Uber enters and housing prices when we do not control for confounding factors. For example, Column (1) shows that the property values tend to be 11.0% higher in places where Uber entered. However, once we add control variables for demographic conditions to model (2), the conditional correlation declines to an implied 5.4% rise in property values following the entry of Uber. However, these correlations may still be potentially biased by time-invariant factors across locations or by seasonal factors because fixed effects are not added. 123 ===== PAGE 12 (score 36, numeric-paren 0, table-words 7, var-words 21) ===== 2136 Y. Paik, C. A. Makridis Table 2 Estimating the effects of uber entry on housing values. Sources: Census Bureau, Zillow, 2010-2016. The table reports the coefficients associated with regressions of logged median housing prices per square foot on an indicator for the month × year that Uber entered a metropolitan area, conditional on metropolitan controls, which include logged population, logged(traffic delay indicator), logged(air quality indicator), the share of males, the age distribution (0–17, 18–34, 35–64), the race distribution (white, black), the share of married individuals, and the education distribution (no high school, high school, some college, college). Standard errors are clustered at the metro level and are shown using brackets Dependent variable = ln(median housing price/sq ft) (1) (2) (3) 1[Uber entry] 0.110∗∗∗ 0.054∗ 0.028∗∗ [0.020] [0.028] [0.010] R-squared 0.02 0.30 0.98 Sample size 398,209 225,176 224,824 Metro controls No Yes Yes Zip code FE No No Yes Year + quarter FE No No Yes *** p value < 0.01, ** p value < 0.05, * p value < 0.10 Consistent with this view, the inclusion of zip code and time fixed effects reduces the marginal effect of Uber’s entry to 0.028, as shown in model (3). Nonetheless, the estimated effect of Uber’s entry on the local housing market remains positive and statis- tically significant, implying that there is a 2.8% net gain in median property values, on average, after Uber’s entry. To the extent that we interpret Column (3) as our preferred causal estimate of Uber’s entry, approximately 25.5% (= 0.028/0.110) of the overall association between entry and property values is driven by the causal impact that Uber has on local amenities—that is, after we control for selection effects.15 The R-squared in model (3) is quite large (e.g., 0.98) relative to models (1) and (2), reflecting the fact that much of the variation in median zip code-level housing prices is explained by time-invariant fixed factors within a zip code (e.g., neighborhood conditions, location of house, size of house, number of bedrooms and bathrooms, parking space) and hous- ing market seasonality trends. It also implies that our hedonic pricing model does not suffer materially from potentially omitted variables, as the variation in housing prices is already sufficiently accounted for in our preferred specification (R-squared = 0.98) (Oster 2019). Given that the mean of the median housing price per square foot across all zip codes in our sample is $98.62/sq ft, Column (3) implies that the marginal effect of Uber’s entry would increase the median housing price per square foot to $101.38/sq ft. This increase would imply, for example, that the value of a 2,000-square-foot home would undergo a gradual increase of approximately $5,520 after Uber becomes avail- able in the local market. Thus, our result is not only statistically significant but also economically significant and realistic. 15 We find it useful to decompose selection and causal effects in our setting to inform policy debates, as is common in many other settings (e.g., in labor economics; see Lazear (2000)). Understanding the magnitude of the causal effect, above and beyond the selection effect, provides insight into other factors that might explain Uber’s entry and the adoption of ridesharing services. 123 ===== PAGE 16 (score 18, numeric-paren 0, table-words 3, var-words 8) ===== 2140 Y. Paik, C. A. Makridis Table 4 Heterogeneous treatment effects of Uber entry on housing values. Sources: Census Bureau, Zillow, 2010–2016. The table reports the coefficients associated with regressions of the logged median housing price per square foot on an indicator for the month × year that Uber entered a metropolitan area and interaction terms testing various heterogeneous effects of Uber’s entry. Metro controls include logged population, logged income, the share of males, the age distribution (0–17, 18–34, 35–64), the race distribution (white, black), the share of married individuals, and the education distribution (no high school, high school, some college, college). Heterogeneity effects are tested by comparing areas above versus below the median value of a key characteristic that represents various local conditions. The median values of these key variables, all obtained from zip code-level census data, refer to the following: at least 26.4% of individuals with a college degree or more, at least 11.3% of individuals below the poverty line, the share of workers over the age of 16 who use public transportation (including taxis) as a means of transportation to work equal to at least 0.8%, average time to commute to work of at least 25 min, and vehicles per capita (16 + and older) equal to at least 0.52. Standard errors are clustered at the metro level and are shown using brackets Dep. var. = ln(median housing price/sq ft) (1) (2) (3) (4) (5) (6) (7) (8) 1[Uber entry] 0.017∗ 0.021∗∗∗ 0.004 0.033∗∗∗ 0.040∗∗∗ −0.001 0.023∗∗ −0.04 [0.009] [0.007] [0.007] [0.008] [0.009] [0.009] [0.009] [0.17] 1[college > median] 0.312∗∗∗ 0.274∗∗∗ [0.013] [0.017] × 1[Uber entry] 0.022∗∗ 0.013 [0.008] [0.010] 1[poverty > median] −0.207∗∗∗ −0.111∗∗∗ [0.017] [0.017] × 1[Uber entry] 0.015 0.000 [0.006] [0.006] 1[pct public transport > median] −0.122∗∗∗ −0.046∗∗∗ [0.017] [0.015] × 1[Uber entry] 0.047∗∗∗ 0.018∗∗ [0.009] [0.008] 1[commute > median] −0.021 −0.054∗∗∗ 123 ===== PAGE 17 (score 13, numeric-paren 0, table-words 3, var-words 3) ===== The social value of a ridesharing platform: a hedonic pricing approach 2141 Table 4 (continued) Dep. var. = ln(median housing price/sq ft) (1) (2) (3) (4) (5) (6) (7) (8) [0.022] [0.021] × 1[Uber entry] −0.008 −0.013 [0.008] [0.12] 1[vehicles per capita > median] 0.142∗∗∗ 0.033∗ [0.019] [0.019] × 1[Uber entry] −0.022∗∗ −0.007 [0.008] [0.009] 1[traffic delay > median] −0.042∗∗ −0.037∗∗ [0.019] [0.018] × 1[Uber entry] 0.056∗∗∗ 0.052∗∗∗ [0.019] [0.017] 1[air quality > median] 0.023∗∗∗ 0.021∗∗ [0.007] [0.008] × 1[Uber entry] 0.017 0.000 [0.020] [0.015] R-squared 0.68 0.63 0.59 0.58 0.60 0.58 0.58 0.70 Sample Size 397,601 397,601 397,601 397,464 397,464 224,856 397,601 224,784 Metro Controls Yes Yes Yes Yes Yes Yes Yes Yes Metro FE Yes Yes Yes Yes Yes Yes Yes Yes Year + Quarter FE Yes Yes Yes Yes Yes Yes Yes Yes *** p value < 0.01, ** p value < 0.05, * p value < 0.10 123 ===== PAGE 18 (score 10, numeric-paren 4, table-words 0, var-words 6) ===== 2142 Y. Paik, C. A. Makridis Consequently, Uber is more appreciated and highly valued in markets with more educated people. Column (2) shows that areas where Uber enters have higher property values (β = 0.021***) regardless of the level of poverty. Unsurprisingly, areas with higher levels of poverty are also negatively correlated (β = −0.207***) with property values in that area. In addition, areas with higher levels of poverty potentially benefit more from Uber’s entry and may gain a point estimate of 1.5% (β = 0.015) more in property values than areas with lower levels of poverty. While this result may potentially suggest the benefits offered by the gig economy platform, caution is needed, as the coefficient is not statistically significant. Column (3) shows that zip codes where people rely more on using public trans- portation (compared to driving their own car) to commute to work are less desirable residential areas in general (β = −0.122***) but may benefit more from Uber’s entry than places where people do not need public transportation as much because they use their own cars. In fact, the net gain that Uber offers to local markets is actually concen- trated in zip codes where dependence on public transportation is relatively high, as the own effect (1[Uber entry]), while still positive, becomes statistically insignificant in Column (3). The interaction effect in Column (3) implies that there is an approximately 4.7%increaseinpropertyvaluesafterUber’sentryinareaswhereusageofpublictrans- portation is high but not elsewhere. The estimate is in line with theory because it is precisely these areas (i.e., where residents are less dependent on driving their own car) that stand to gain the most by having a more robust and active ridesharing economy, as more individuals value having access to a low-cost alternative transportation mode. It is worth noting that the construction of our variable, 1[pct public transport], relies on 2010 census data that combine taxi users and users of other public transportation modes. Thus, it may be useful to consider the heterogeneous effect of Uber’s entry based on residents’ average commute time to tease out some of the nuances and gain more insight because as commute time increases, it probably becomes less likely that people rely solely on taxis on a daily basis. Column (4) shows that zip codes where people experience longer commute times may be less desirable residential areas in general (β = −0.021, although not statisti- cally significant) and that, consistent with previous results, the net gains Uber offers to a local market are positive and statistically significant (β = 0.033***). In addition, the interaction term (β = −0.008) in Column (4), while negative, shows that there is no statistically significant difference between locations where people experience longer versus shorter commute times. This nonsignificance most likely occurs because peo- ple living in locations with longer commute times rely on their own cars or low-cost transit rather than taxis. Thus, Uber (which functions similarly to local taxis) may not provide much benefit to consumers with longer commute times, especially if they use Uber sporadically rather than for commuting purposes on a daily basis. Therefore, the results in Columns (3) and (4), taken together, imply that Uber is similar to a taxi service that may be used for shorter trips (e.g., the “last mile” after getting off a train station) or for occasional rides, rather than longer commutes, but potentially offers greater convenience and cost-effectiveness. 123 ===== PAGE 19 (score 11, numeric-paren 3, table-words 0, var-words 8) ===== The social value of a ridesharing platform: a hedonic pricing approach 2143 In Column (5), the interaction term shows that the entry of Uber may actually be undesirable in areas where the level of vehicle ownership is already high, as the coef- ficient is negative and statistically significant (β = −0.022**). If vehicle ownership is already high, then there may be less demand for ridesharing services or for other public transportation options (e.g., the correlation between the share of the population taking public transportation and the measure of vehicles per capita within a zip code is −0.67). Nonetheless, these areas must still endure the negative externalities of ridesharing services, such as increased congestion (e.g., frequent stops by rideshar- ing drivers to load and unload passengers) or increased air pollution (Keating 2019). Hence, areas with high vehicle ownership seem to appreciate the entry of Uber the least because people rely on driving their own cars. Column (6) shows that, unsurprisingly, zip codes that suffer more traffic delays are less desirable residential areas in general (β = 0.042***) but may benefit more from Uber’s entry than other places where traffic delays are not as bad because consumers can benefit from the convenience of using a low-cost ridesharing service such as Uber rather than stressfully driving to navigate local traffic congestion. The interaction effect in Column (6) implies that there is an approximately 5.6% gain in property value after Uber’s entry in areas where traffic delay is severe compared to areas where traffic delay is not so severe. Similar to Column (3), the net gain Uber offers to local markets is concentrated in zip codes where traffic delay is relatively high, as the own effect (1[Uber entry]) becomes statistically insignificant in Column (6). The result in column (6), as well as the result in column (3), shows that local traffic conditions are an important factor that unleashes the potential benefits Uber offers. Column (7) shows that areas with better air quality may be more desirable (β = 0.023***) to reside in general. However, the interaction term between air quality and Uber’s entry is not significant (β = 0.017), which implies that the benefit of Uber’s entry does not differ across areas depending on their air quality. Column (8) includes all interaction terms simultaneously and finds that the inclusion of all interaction terms does not materially alter our results and interpretations. Importantly, while we find that the benefit of Uber’s entry had substantial spatial heterogeneity depending on various local market conditions, we find that the benefits were concentrated in areas with greater dependence on public transportation or with higher levels of traffic delay according to column (8). Overall, our quantitative results from the hedonic pricing model point to the follow- ing conclusions: after Uber’s entry, there is a nonnegligible average economic gain in property value that is equivalent to an increase of 2.8% in the median housing value per square foot. While our hedonic pricing model suggests that Uber has a net positive social value on average, there is substantial heterogeneity across regions based on local conditions. Regions with greater dependence on public transportation (as opposed to driving their own vehicle) and with greater traffic delay benefit the most after Uber’s entry. These findings are corroborated in Column (8) when all interaction terms are included simultaneously, as this column shows results that are qualitatively similar to those in Columns (1)–(7). In summary, our main findings are consistent with the 123 ===== PAGE 20 (score 6, numeric-paren 0, table-words 0, var-words 6) ===== 2144 Y. Paik, C. A. Makridis view that Uber, and ridesharing more generally, functions as a relatively low-cost, time-efficient for-hire transportation mode that directly competes with local taxis.17 4.4 Aggregate social value of a ridesharing platform and policy implications We now compute the aggregate welfare gains from having access to ridesharing. Under the assumption that the MWTP for access to ridesharing is homogeneous, we can take our preferred gradient of 0.028 and scale it by the number of individuals who had access to ridesharing as of the end of 2016.18 We take the total population in these metropolitan areas with exposure to ridesharing platforms such as Uber and scale it by the number of individuals, which equals approximately 209,256,147 people. As of 2016, among the set of metropolitan areas with an Uber presence, the population- weighted average of the median housing price per square foot was $130.9. Given that we find that Uber entry is associated with a 2.8% causal increase in housing prices, the marginal increase amounts to $3.67 per square foot. Once we scale this figure across all individuals exposed to ridesharing in these markets, we obtain a total of $768 million of net value created to society. Thus, our results show that ridesharing platforms represent a net gain for society. The policy implications of these results deserve some attention. While our results show the net gain to society represented by Uber’s entry and the heterogeneity of social value accrued across regions, our method cannot speak to the heterogeneity of social value accrued to each agent (e.g., taxi drivers, Uber drivers, renters, homeowners, or nonusers of Uber) within a market.19 We only know that in aggregate, the benefit that residents (renters and homeowners alike) enjoy from having access to Uber outweighs the cost that they suffer from the disruption generated by Uber. The net benefit is thus translated into a higher willingness to pay for being a resident. In this regard, some policymakers may be responding to the harm done by Uber to specific groups by banning Uber against a background of society-wide gains. For example, this was the case in Austin, Texas, London, UK and other international markets (Lee 2017). In addition, due to spatial heterogeneity, if regions with greater dependence on public transportation or greater traffic delays increase property taxes (for example, up to 2.8%, according to our estimates20), the additional tax revenue can be used, for example, to 17 Paik et al. (2019) reports that Uber offers a significant economic benefit in the form of a 45% discount, on average, relative to a typical taxi fare for the same 5-mile distance due to ridesharing. 18 If the MWTP for access to ridesharing is not homogeneous, then the welfare gains may be lower than our estimate. The reason is that if homebuyers who care about Uber are likely driving up the prices for homes, then individuals other than homebuyers may have a lower MWTP. Our welfare estimates will be the upper bound in this case. 19 The welfare implication of Uber for each agent is the subject of many prior microlevel studies (e.g., Barrios et al., 2020; Cachon et al., 2017; Chen et al., 2019; Greenwood & Wattal, 2017; Hagiu & Wright, 2019; (Park, Pang, Kim, and Lee 2021) https://pubsonline.informs.org/doi/abs/10.1287/isre.2020.0978). However, the purpose of this study is to synthesize and compute the aggregate social value created by Uber that accrues to both users and nonusers of Uber so that we can complement prior studies. 20 Given that platform businesses such as Uber intentionally incur accounting losses for many years while offering promotions and discounts to users, the increase in property taxes should be much lower than the 2.8% we estimated because it is likely that Uber will eventually begin to increase prices once it starts to enjoy a strong network effect (Katz & Shapiro, 1985; Parker & Van Alstyne, 2005; Zhu & Iansiti, 2012). 123