i take waymos all the time, often replacing my car, i have never had a single issue
of course they can scale in a cost effective manner, the operating costs are theoretically the same as just owning a car but they get to amortize it across many different users and don’t have to pay for human labor
But so what if they do have full coverage in 10 years? We can build apartments with no/fewer parking spaces, and therefore somewhat lower costs. Why do we build those sort of apartments on some of the most desirable land on the planet? Look at the One Coast development on the bottom of Sunset - denser than SFH, plenty of parking, and no trouble selling condos starting at $3-5m. At that's at the bottom of the hill!
Does Monaco have apartments for $300k? Does the LES? West Palm Beach?