The townships in the western cape are probably the worst in the country. And the reason for that is simply space. During apartheid far less space and far fewer services were allocated to people here. The internal migration outpaced their willingness to zone new areas, as done for example eventually in Soweto. This is why I think it is so assinine for the government to focus on rural land use, when the much bigger problem in large parts of the country would be formalizing informal settlements and providing basic property rights and services to them. If you have a shack in a township it is not unheard of that your community just strips you off your property, or that a previous tenant just takes it over again. The land on the edge of the cities is often privately owned agricultural, or a national or provincial park, making land invasions likely and rezoning so difficult.