Everyone I know who lived here before Uber/Lyft has a story about going out to the bars, calling a taxi, waiting two hours for it to come, and ending up walking two more hours home because the taxi never arrived. And I'm sure many more people have had the same experience and simple chosen to drive drunk. It's quite literally a publicly safety issue. Luckily Uber and Lyft came along two years ago and are now operating legally.
The #1 thing we've all learned from this debacle is that many, many cab companies are the scum of the earth. To be fair, though, some are still good. In Chicago, for example, you can hail a cab without even trying. You can go to the bathroom and find a cab waiting for you in the toilet. They are everywhere, they are reasonably priced, and they know the city a hell of a lot better than most Uber drivers. They continue to thrive because they are full time professionals who provide a better service than Uber and Lyft. That's a lesson the drivers in Paris and Pittsburgh need to learn.