"Who pays? The people who caused the problem. People who don’t live in their homes, investors and developers. In this case, the rich will have to subsidize the poor — well, if they want someone to serve their lattes."

Wrong country dude.  And you start out stating single men are the biggest source of homelessness.  Rich people/investors aren't responsible for making people be single.  And, again, your whole article is based on the premise that it is OUR problem to solve for them.  It is not.