So, why do you pay your internet/phone company? Or your electric company? People are going to want to pay for government services they use, or ones they believe would be beneficial to society. Even from a security and medical perspective, it costs way way WAY less to take a homeless bum off the street and put him into a shack with a bit of food money, than it does to keep policing him to make sure he doesn't steal or cause issues, and to treat him for major medical issues he gets from living outside without food. I would think security and medical companies would implement this to lower their bottom line, but this is something that governments don't often realize, and thus ignore.