Sure - part of the problem is setting a bad precedent that people might exploit, but another significant problem is this: "Eight of the nine patients have drug abuse problems, seven were diagnosed with mental health issues and three were homeless." I'm over-generalizing, but those sound like folks who aren't going to take well to being put into supervised housing and 24 hour care/observation. So, unless you are planning on incarcerating them (for costing too much money?) the logical solution is something they won't participate in.