It costs around $100,000[1] to be allowed (by the city) to drive a taxi in New York ($1.3MM in 2014), for a job that pays on average $43,000[2] per year - which involves driving an average of 70,000 miles per year - which at an average speed of 4.7mph[3] works out to $3/hr (not counting waiting time).
It's still not a living wage, but making $9/hr[4] just by owning a decent car seems like progress.
[1] https://citylimits.org/2019/11/30/need-to-know-taxi-medallio...
[2] https://www.salary.com/research/salary/benchmark/taxi-driver...
[3] https://www.latimes.com/nation/la-na-new-york-traffic-manhat...
[4] https://www.thestreet.com/personal-finance/education/how-muc...