People who care about the points you have raised should continue to be able to hail yellow cabs. People who don't should be able to call Uber. I don't see why the two options must be mutually exclusive, which is what regulators and owners of taxi medallions seem to be saying.
Its not entirely that simple. If most people switch to Uber then a given city won't be able to support it's previous population of cabs and it will be harder to call one in less heavily trafficked areas. Now, if that ends up happening I feel like the consumers have spoken and too bad for cab users but it's not irrational for a Taxi fan to try to discourage others from using Uber.
