I think the fallacy you're making is assuming all homeless have the same problems. There are definitely some homeless or near-homeless people where having a safe place to sleep, shower, and store their belongings will allow them to hold a job long enough to get back on their feet. There are others that need serious rehab. There are others that need mental health counseling. There are others that will never be able to care for themselves and need to be put in a care home.
So really there is no one-size-fits all solution. Individual treatment is needed, and early intervention always has the best outcomes.
So really there is no one-size-fits all solution. Individual treatment is needed, and early intervention always has the best outcomes.