Earlier quoted context omitted.
America already has plenty of cities that aren't doing very well, and aren't getting migration, so new cities aren't going to help. There's plenty of cheap housing inventory in the US, just not in the places where the jobs are.
I guess many jobs don't want to be in the places where very cheap housing exists. What is the point of earning SV money and live in a bad neighbourhood?
So, what do you actually want? Do you have to live in NY or SF, or can you live in flyover country? You can buy out there, if you're willing to live out there. If it were me, I'd consider taking 20% less Silicon Valley money for full remote (if I could get that), and live where I could buy something.