[rycfan]

You've just described some possible flaws in a p-2-p system. Are there no flaws in the current cab system? Are there no flaws in Uber?

You've pointed out why it can't be perfect. You haven't proven that it can't work.

Perfect is the enemy of good. It doesn't have to be perfect. I was going to say it just has to be better than our current system. But it doesn't. It just has to be legal. Maybe it's better, maybe it's worse. But we're allowed to give it a try (generally speaking -- maybe not in California, but possibly in another state that doesn't have the same rules).

If the flaws you point out occur often enough, then people will stop using it and the experiment will fail.