The interesting thing in the case of Uber/Lyft/etc. is that the end goal would almost have to be a situation in which on-demand ride sharing applications became nearly the sole mode of transit in the regions of interest. Otherwise, literally as soon as you drive out all the other transit competitors (taxi companies, other ride-sharing services, whatever) and begin to apply monopolistic prices, there will be a huge flood of lower-priced alternate options, like taxi companies popping up again.
For me, this is what's so scary about Uber. It's not "disruption" as many people seem to claim. It's engineered regulatory capture.
The goal isn't to disrupt a market, but rather to wipe it out and have the financial and political backing to secure some sort of regulatory environment in which lower-priced options cannot emerge after the VC-subsidy phase ends and the monopolistic price increases begin.
It's double sad that as the sort of flagship start-up of the era, Uber leads the way in deplorable executive behavior, shady business practices, and questionable labor policies ... and despite it, they've managed to win the PR war that has every naive tech youngster singing about how they are "disruptive" and singing how all criticisms against them are invalid because of precious, precious "disruption."