you hit it right onMany many years ago in Texas we helped build one room building s bed kitchenette shower sink toilet. Larger open area building for rec room group meeting group meals. Withing a short time the upkeep became too much. Not having someone on site 24 7 to monitor behavior and transportation medical mental health drug testing rehab the list kept growing. Seems free doesn't work. A lot of the reson people become homeless keeps them for becoming tenets.
With rules they cant and wont follow keeps them on the streets. Otherwise they could just live rough in a campground. States could offer section 8 for campgrounds state parks ect. But they wont because of the issues with behavior and lossing paying guests . shoot use some of the million storm sandy trailers the government owns.