Why do new homes have to be built in competition with existing homes? With remote work and the digital elite moving wherever, why not just pop up new developments wholesale, complete with shopping and services somewhere out of the way and cheap?
That's how we get urban sprawl in the first place, and it is not a working strategy in the long run. Cities benefit from high urban density, and reducing density means less benefit.
Cities used to be where young folks found a job and a mate. The job part isn't such a thing anymore due to remote work but I can still see the appeal of a place like NYC if you're trying to find someone.