That’s the subtitle of a dissertation by UCLA PhD candidate Anne Elizabeth Brown. From the abstract:

I find that ridehailing extends reliable car access to travelers and neighborhoods previously marginalized by the taxi industry. Ridehailing served neighborhoods home to 99.8 percent of the Los Angeles County population. Strong associations between ridehail use and neighborhood household vehicle ownership suggests that ridehailing provides auto-mobility in neighborhoods where many lack reliable access to cars. For most users, ridehailing filled an occasional rather than regular travel need, and a small share of avid users made the majority of ridehail trips. While hailing shared rides was common in low-income neighborhoods, I also find that people shared less if they lived in racial or ethnically diverse neighborhoods. Finally, audit data reveal high levels of discrimination against black riders by taxi drivers. Black riders were 73 percent more likely than white riders to have a taxi trip cancelled and waited between six and 15 minutes longer than white riders, all else equal. By contrast, ridehail services nearly eliminate the racial-ethnic differences in service quality. Policy and platform-level strategies can erase the remaining mobility gap and ensure equitable access to ridehailing and future technology-enabled mobility services. 

I have highlighted the passage that summarizing the finding that pertains to “equity.”