Earlier quoted context omitted.
There are plenty of network effects. To start a new ridesharing company, you have to get drivers and riders. You'd have to offer them a ton of incentives to start driving/riding with your service, when the existing options are well established. For drivers, Lyft and Uber have incentives (lower fees) if you do the majority of rides with their service, which incentivizes you to only drive with one service. When's the l…
The future of ridesharing is uber pool/lyft line in order to increase efficiency. The network effect is huge.
It can be handy when you're not in a hurry, but as long as people are involved, and they aren't always where they say they are going to be, there's a pretty hard upper limit to how efficient things can get.