I don't understand why people continue to live in increasingly unaffordable city, with vanishing funds, and expect a miracle (which they might get, yeah, coming

I don't understand why people continue to live in increasingly unaffordable city, with vanishing funds, and expect a miracle (which they might get, yeah, coming from pockets of others). Why not move? They might be attached to the place, but frankly - they arrived into the city in their 20-s. Now there's a new wave of 20-s aged guys and gals who would like to take their place and have money/jobs to back this up. Why previous generation is considered to be entitled to living where they want and getting subsidies on that, while next generation is supposed to cope (and pay those subsidies also)?