I'm not sure which studies have you so convinced that one overly simplistic thing can "solve" homelessness. This paper from 1991 does a great job of laying out the dozens of different factors which make homelessness such a complex and challenging issue to address: https://scholarship.law.umn.edu/cgi/viewcontent.cgi?article=...
A lack of affordable housing compounds the challenge, but to say housing is the only solution when it isn't even a good partial solution misses the entire problem.
A lack of affordable housing compounds the challenge, but to say housing is the only solution when it isn't even a good partial solution misses the entire problem.