Maybe the most desirable locations on Earth should be theme parks that a billion people can visit, rather than gated mega-communities for ten million wealthy/lucky long-term residents.

Maybe one day the typical life will consist of visiting a different theme-park-like city every few days, and people will identify with their planet rather than a few hundred square miles that's designated as their city of residence.

Well I wonder who is going to keep the cities running then.

This reminds me of the statist trope, "who will build the roads?!"