Uber's main business model hinges on trying to play the game of "we're not an employer, we don't operate a fleet of cars, etc." in order to circumvent labor laws and local regulations around taxi fleets.

This is to get away with treating their de facto employees (drivers, who often work full-time) poorly and to avoid dealing with pesky things like having to provide insurance or accommodate people with disabilities.

If Uber is acting (for all intents and purposes) as an employer of a taxi fleet, then we as a society have every right to demand that they behave accordingly. They shouldn't, in my opinion, get away with avoiding the intent of our laws because they can hold up their hands and disingenuously claim "Oh, we're not an employer! We're just a marketplace!!".