It always seemed like this is one stop-gap interim solution to the homeless issue, as long as there was reason for people to utilize designated areas to live in. Those places probably wouldn't be very safe, so there would need to be other drivers for why to live there, like open access to food or medical care. Even with that the goal would be to get people who are often mentally ill or doing badly related to drug addictions to make clear and rational decisions, which wouldn't be easy for them.