I'm reading that as "Forcing people to accept treatment for their mental health problems and drug abuse," but I'm not sure if sure I understood your meaning correctly.

In my country we start the idea with "A person needs a safe environment, a home of their own, to heal from the things that caused their homelessness."

So they are provided with an apartment without requirement for staying sober and they are guided towards mental health services and addiction services.

If you drag someone kicking and screaming to a rehab, they'll be back on street in a blink of an eye.