The logic I kept hearing repeated is ride-sharing is a winner take all market. Like once you have a network of drivers setup giving people the lowest times for rides, you can force other competitors out and raise prices.
Time has proven how wrong this thinking was. It's almost impossible to stop competitors in ride-sharing because the cost of switching for customers is low, there are no legal or capital ex competitive barriers, and you can be picked apart city by city. Even drivers are incentivized to download as many of these apps as possible.
The whole situation seems awfully similar to Living Social and Groupon.