In a socialized system who decides who gets to live where? Is it a lottery drawing that decides who lives in the rented hi rises overlooking central park? Or a lottery deciding those that just get to live in New York or Miami or San Francisco or Los Angeles? Because all those cities have crazy housing/renting cost due to demand and even if you replaced every single family home or ever small multi story with a large multi story it still wouldnt be enough to cover the massive demand. So who would choose who gets to live in those cities?