Dorms are only appealing when they are filled with young attractive peers, not washed up aging adults whose ambitions and dreams have been crushed by the reality of the real world.
Globally, you certainly don't see many uber-wealthy people over 30 yearning for shared living accommodations. Nor have I ever met anyone who said "I wish I had a neckbeard gamer who doesn't shower and a 39yo crazy cat lady on Xanax as my roommates."