>Maybe it would be best if there were no parking mandates at all and cities let the market figure out the right amount of parking space.
That's just hilarious. You should visit just about any city in central and souther europe. All were build either before cars were a consideration or without adequate planning. The result is that driving downtown is a nightmare. Having minimal parking works ok when the population density is high and public transportation is good, but in a car-centric country like the US it just wouldn't work. And having public transportation is another thing to consider when planning a city.