> Also why should cities prioritize protecting residents based on how long they've lived there? Everyone counts the same.

That's a great question. Why do countries prioritize existing citizens over all people who want to move into them? We are, after all, all the same. Two legs, two arms, just under a dozen fingers, most of us aren't destructive shitheads.

If we just let in anyone who wants to emigrate, you wouldn't be trapped in an apartment, or home, or city or life you were born into. You would always have the chance to 'upgrade' to one that's worse!