Another problem with "just providing housing" is that there are a good number of these people who need a lot of support and have a hard time functioning in soci

Another problem with "just providing housing" is that there are a good number of these people who need a lot of support and have a hard time functioning in society. Here, they tried giving homeless residents housing vouchers to apartments, and it lead in a significant drop in quality of life for the people who lived there, with a rise in violence and crime in the buildings (this is based both on newspaper articles about the program and talking with residents). I've known people in buildings like that who are looking to move after living there for decades.