Everyone pays, either in time or money. The point is to decouple this from the payment for housing. If every apartment comes with two spots, why not have two

Everyone pays, either in time or money. The point is to decouple this from the payment for housing. If every apartment comes with two spots, why not have two cars (and drive more). If you have to pay a market rate (in time or money) to park each car you may well decide to make due with one car.