Think militarily; the USG does. The American elites choose easily defended areas to set up shop – like islands and mountains.
The pattern is the same in all Western mountain paradises – Taos, Vail, Telluride, Jackson Hole. The rich find an authentic, honest” small town up on a mountain. The elites buy up property and raises prices for everything.
This forces the poor and middle classes out-of-town. They are then forced to move elsewhere. They may still work in Aspen, but they’ll commute.
Like NYC and DC, Aspen mansions are often vacant. The truly elite have many houses in many places. The nickname is “halfway houses” – half the time occupied, half the time not.
Petty criminals often do break-ins, which is why in many elite enclaves there is a …..….business in home-sitters who watch a house while the owner is vacant.
In time, richer and richer people come to live. Soon it’s not just the American rich. After a spell, the usual Arab oil princes and Chinese billionaries join in. They tear down the mansions they buy in order to build their own, newer mansions.
…and that’s pretty much where it ends. There is no “reverse” process.
The worker class keeps complaining about low wages, the outsiders, and the commute. The rich complain about always being around other rich. And nothing changes.