This country did exactly that to the mentally ill, decided it was too expensive to keep them off the streets so turned them out on the streets. Many of our "homeless" are either mentally challenged and/or addicted or both. I remember pictures and articles about this "cost savings" event.
There are other nations that do it different but of course that would take an investigation of "science" and statistics and in America we are opposed to that sort of thing. Most white people in America do not think Black people are as smart as white people, it was not that long ago that women in America could not vote, apparently not smart enough either. Whom makes these decisions, based on what?