> Slums are usually the result of government restricting or failing to build enough housing (of the right kind) which forces people to build their own permanent housing without any permits at all.

Your conspiracy theory makes no sense at all. The role of a government, if any, is to stop people from building shanty towns. That's what building regulation does: stop anyone from building sub-par housing. It makes absolutely no sense to claim that slums pop up because a government stops people from building slums.