More housing (even luxury) increases supply thus lowers prices. That means that someone living in a studio might move to a 1 bed, leaving the studio vacant, thu

More housing (even luxury) increases supply thus lowers prices. That means that someone living in a studio might move to a 1 bed, leaving the studio vacant, thus increasing supply as people move up — a process that is only possible with a greater supply. And rent control actually leads to shortages as mobility is reduced because of people staying in places longer than they would have otherwise. It also disincentivizes creation of new housing. Greater supply is needed. That’s the bottom line.