Since I’m not American I keep forgetting about your for profit churches. The concept is just too foreign to me. When I think church I think of 300 year old cold stone building in the countryside.
Still there are homeless that would refuse, some from not believing or trusting you, some from not wanting to relocate even if it means that level of comfort, some from being deep into addiction thinking that they’ll be forced to get clean. And some will take you up on it and just absolutely trash the place trying to steal anything not bolted down.
That said the vast majority would for sure jump on it and thrive. So if it was at all possible to make happen it would be a good idea.
America definitely has its old, historic churches, but they’re far from common.
We have so many other kinds of churches, huge mega churches that essentially have a whole campus. Tiny churches in shopping centers. Growing up I went to a little church that was in the middle of an otherwise normal neighborhood.