Would you pay a little more to have the most flexible, sophisticated intelligence on Earth (human brain + driver assist) or would you want to save a few dollars and risk having some dumb piece of software strand you in the middle of the road somewhere?
We all use Google Maps or Apple Maps when driving and most of us have seen these systems do boneheaded things. Just imagine the dumb things a robotaxi could do.
So robotaxis are perhaps mainly attractive to the very low income parts of population, people who might buy an inferior product to save a dollar or two. People who buy store-brand ketchup instead of Heinz ketchup even though it doesn't taste as good.
It's hard for a normal person to be excited about this.
Anyway, I think we can all agree that the only benefit of a robotaxi is that it's cheaper. And we don't know how much cheaper. So it's not surprising that most people aren't excited about them.
I don't know a single person who cares about robotaxis. In my experience, if you talk to people about robotaxis they just don't see it as big step forward. "What's the point?"
Additionally there's the problem of the market tolerating current prices. Like gasoline, even if the cost comes down it doesn't mean price goes down. Profit margins will increase if the market can sustain current prices.