Many of their top markets have ruled their drivers are employees (or requiring similar compensation/benefits), except Brazil. I'm unsure if they can remain anywhere near their current size (versus the headcount of a traditional livery service) based on that regulatory environment, even with McKinsey style transformations to their business (ie offshoring).
> "But one detail in particular caught my eye. About 24 percent of Uber’s bookings—all the money that customers pay through the app and in cash, including driver earnings—occur in just five cities: New York, Los Angeles, San Francisco, London, and São Paulo." [1]
London: https://www.theguardian.com/technology/2018/dec/19/uber-lose... ("Uber loses appeal over driver employment rights")
France: https://www.reuters.com/article/us-uber-court/top-french-cou... ("Top French court deals blow to Uber by giving driver 'employee' status")
California: https://finance.yahoo.com/news/california-regulator-uber-lyf... ("Uber, Lyft drivers are employees according to California regulator")
New Jersey: https://www.nytimes.com/2019/11/14/nyregion/uber-new-jersey-... ("New Jersey has demanded that Uber pay $649 million for years of unpaid employment taxes for its drivers, arguing that the ride-hailing company has misclassified the workers as independent contractors and not as employees.")
New York: https://www.nytimes.com/2018/07/02/nyregion/uber-drivers-pay... ("New York City regulators are moving toward significantly raising wages for drivers for Uber and other ride-hailing apps.")
[1] https://slate.com/business/2019/04/uber-ipo-nyc-london-risks...