being enabled to continue doing something (at the cost of others!) just because you want to keep doing it is not a particularly legitimate reason
also, if people move to Berlin, they also become the people of Berlin.
also, if people move to Berlin, they also become the people of Berlin.
"I want to move to Berlin", on the other hand, is not a particularly legitimate reason to kick out a current resident for a newcomer.
We are not talking about getting tickets to an NBA playoff game, we are talking about housing. If someone has been living in a city for their entire life, it's not reasonable to expect that due to "market forces" they should have to pick up their entire life and move to an unfamiliar place because they can't continue to compete in the market into their golden years.