I think you're reinforcing my point that existing transportations options suck, but I don't see how Uber is economical enough to compete with buses, bicycles and walking, especially if you're doing that at any regular frequency like commuting.

If you could walk somewhere then you don't need a car, but if you need a car then you weren't a pedestrian or cyclist anyway. There are also many people who didn't have any good option at all before (like kids, disabled, elderly, etc) and it's a good thing that they can get around now.