There seems to be an implicit assumption in a lot of cases that robo-taxis will drastically slash the price of taxis relative to today. Maybe cut the prices by 50% at best? That's about the delta between me driving my own car versus getting an Uber into the city. It's enough to get me to drive but is certainly not in too cheap to meter territory. And being able to have the vehicle I want with various stuff stored in it today is useful as well.