Assuming such a future comes to pass (And that’s obviously a big question mark), desirability and property values in suburban-like neighborhoods would go up, since suburbs are no longer at a disadvantage for all those things you are arguing, like walkability, socially vibrancy, etc. A quick tap on your phone and 15 minutes later you can be at the bar or the shops or whatever else. Combine that with the remote work revolution and the future is looking great for suburbs and terrible for cities.

If anything, I’d argue Americans are ahead of the curve. In a society where self driving cars are cheap, environmentally sustainable, and always available people would naturally fan out into suburban living, with mixed-use development falling out of favor.