The Yellow Cab special interests paid off politicians so that there was a limit of 13,000 Yellow Cab medallions for 8.5 million people. The price of the taxi medallion was $1.2 million. While people in Manhattan could get a taxi, there were no taxis in Brooklyn, Queens, Bronx, ... Because of the artificial limit on medallions which only benefited medallion owner but not New Yorkers, a driver leasing a cab for a 12 hour shift could pay $125 just to lease the car.
When Uber and Lyft came, the rates were lower, one could use Uber Pool to have even lower rates and save on greenhouse gas. Now taxi services have some availability outside of Manhattan. Now many Yellow Cabs are idle and the value of the medallions went for $1.2 million to about $700,000 or less.
In NYC, the Yellow Cab medallion owners tried to get the mayor to put restrictions on the growth of Uber/Lyft, but New Yorkers protested.
Uber/Lyft have increased customer value, lowered greenhouse gasses while not forcing drivers to pay excessing leasing fees for vehicles.