When the monopolistic rideshare titans were banned in Austin there were local competitors within weeks. They kinda sucked for a few months, but by the time Lyft and Uber returned they worked quite well. They also paid the drivers FAR better, I heard on driver forums that it was easy to make over 20 an hour. Most drivers I talked to were very upset when Lyft/Uber returned, because they took over 50% pay cut.

With the technical might that is Silicon Valley, California only needs to hold their ground for a few months, then Lyft/Uber will become an afterthought