Now in my case, the people who are shut out of my neighborhood arguably have less access to things like good schools, so in principle I'm uncomfortable with exclusionary zoning and economic segregation. But I don't know if that's the case in SF. Are the elementary schools in SF that much better than in surrounding towns?
There's a great deal of city-by-city, neighborhood-by-neighborhood, unit-by-unit variation, but the crisis is that even the floor is so high.
By some estimates it's double digit percentage points off US GDP
https://www.nytimes.com/2017/09/06/opinion/housing-regulatio...
Part of the cost is that tech companies have to find more and more money to pay staff in order to maintain the growth their investors demand, which leads them to do less and less ethical things like spying on people.
While such a large portion of tech company revenue is going to landlords (via staff wages) tech companies will continue to get worse at things like privacy.