[oftenwrong]

If the restaurants in my neighbourhood choose to not serve hamburgers, are they shutting out people who eat hamburgers? If hamburgers are in sufficient demand, a restaurant will choose to serve them. If the government forces all restaurants to make 1000 hamburgers a day, it will tank the market value of hamburgers, and force non-hamburger-eaters to pay more to cover the losses from making an excessive amount of hamburgers.

When the government forces all developers to build parking, and provides free or severely underpriced parking on streets, it lowers the market value of off-street parking. Developers are forced to price-in parking development and maintenance.

Developers will still build parking where residents need parking. If they didn't, they would have trouble selling/renting their property. There is no need to force them. In cities around the world, we still find private parking in absence of parking minimums.