[kypro]

The good jobs are there. And if you have a good job you can live in a nice neighbourhood that doesn't have to worry about this stuff while benefiting from all the cheap labour that comes from having lots of poor people around – cheap restaurants, affordable delivery services, cheap taxis, etc.

It's win win if you avoid the bad areas and the bad areas don't grow too large. SF failed because its underclass grew too large and they stopped arresting the criminals among them. Now the people with the nice jobs in the nice houses don't want to live there because they increasingly need to live among the poor.