For most U.S. cities that Uber/Lyft now service there really wasn't a taxi service before them. You could get one at the airport and possibly in certain other areas of the city like by major hotels. Everywhere else it was call a company and maybe they'll show up at some point.
Note that Uber/Lyft do something the taxi companies can not. They scale to meet demand. If 1000 drivers are needed between 6pm and 8pm then they'll likely get 1000 drivers. Taxi companies can't do this as they'd lose money on drivers and cars when all of them are not in use.
Any driver who was formerly driving for a small taxi company could simply drive for Uber/Lyft. So what is the benefit of having management be local vs centralized?
Local artisnal petite bourgeoisie businesses only available to middle class people living in downtown urban areas are the only moral form of capitalism! That and when you get tired of the city and decide to start a farm in rural Oregon.
Hahaha Right now they are 1/4 of taxi prices. Or at least last time I rode a taxi.