I don't know exactly what effective tax rates are for the poor (but when I was poorer I was much more concerned about how much I was paying in taxes, for whatev

I don't know exactly what effective tax rates are for the poor (but when I was poorer I was much more concerned about how much I was paying in taxes, for whatever that's worth, and this was just two years ago), but it could easily be the case that such services mostly would be profitable were they not run by an organization with an interest in justifying a higher budget, instead of making a profit. My own feeling is that many things the government now does at a loss could be done profitably in a competitive market, and lots of services for the poor fall into this category.