Uber is abusing its drivers. It advertises "1 million dollars!" of insurance. But that insurance only covers your passengers and victims, and only if you're at fault. It doesn't cover you, or our vehicle, or anyone at all if you got struck by another vehicle, perhaps one without insurance. And your private insurance on your car will not cover a thing if you're driving the car for hire.
There are perfectly good reasons for regulating taxis. As well, there are good reasons for building solid mass transit options so taxis won't be so needed. Allowing Uber to operate puts the public, and its drivers, at risk for no reason beyond the desire to drive down pay below the already barely-subsistence rates that taxi drivers earn. If you don't have a commercial drivers license, and you're not driving a licensed commercial vehicle, and you don't have full commercial insurance, you shouldn't be taking fares. If you are, that's criminal in many places, as it should be. Uber's executives should be arrested for criminal conspiracy.