Uber isn't Facebook or Google, though. Plenty of Uber drivers work for more than one company, and there's nothing to stop a new arrival from poaching a ton of U

Uber isn't Facebook or Google, though. Plenty of Uber drivers work for more than one company, and there's nothing to stop a new arrival from poaching a ton of Uber drivers, as long as they give the right incentives. Facebook was protected by network effects, YouTube by the large video library. From the end user's point of view Uber has no such protection.