In addition, there's no network effect with scooters. Car sharing has the chicken-and-egg problem where you need enough drivers to meet demand, and you need enough passengers to give drivers a reason to drive for you. But scooters are cheap and easy to dump a whole bunch on a city, so there's no reason why a new company can't move in on an existing scooter market. For the most part the only important pieces are the brand recognition of the company and how easy their app is to use. If Uber is serious about scooters, I fully expect them to just move back in when the pilot program is over and immediately pick up a sizeable chunk of the market.