They just don't seem to do that kind of housing in much of the US due do zoning. It's all "single-family homes", with no opportunity for more mixed-use construction that would allow for density and cheaper accommodation, such as relatively low-rise buildings (i.e., less than six floors) with one/two bed flats, or even things like corner shops, community post offices, creches, and the like. All that's illegal, which is insanity.