It is more than that. The issue is that SF provides a lot of services to the homeless and tolerates them. In more conservative cities, they have harsh anti-home

It is more than that. The issue is that SF provides a lot of services to the homeless and tolerates them. In more conservative cities, they have harsh anti-homeless laws. Some cities have even been caught giving "one way" tickets to get rid of their homeless problem. The net effect is that certain cities tend to have an abnormal accumulation of homeless due to homeless moving there.