Geographical mobility used to be much easier. In the age of credit scores and limited housing, it is extremely difficult to find a landlord who will admit you without a job, and much harder to find a job that will hire you without already being local.
Well, credit scores as we know them have been around since the 60's...so, not really that new.
There's PLENTY of housing....just depends on what part of the US you are in.
I see houses for sale all the time where I live (New Orleans area)....it may be scarce in NYC or west coast urban areas....but that is not the whole US.
In other parts of the US, there are homes...GOOD jobs, and cost of living is much less.
And those are regular W2 jobs.....if you jump into 1099 contracting....you can work wherever and very much often....remote.
I've done both....and if you have any job experience, you can get jobs before you moved.
I've never moved before having a job in that area....