Home building is rampant in some areas, it's just not in the insanely VHCOL coasts.
Tax incentives or other reasons to have companies offer jobs in places like Milwaukee or Boise reduces housing pressure on the big cities.
What we used to have is smaller (in area) cities, who were not governed in lock-step, and if housing was needed, entire new cities would pop up (sometimes called suburbs, but check them - often they're their own legal entity).