Well, it’s pretty dumb to suggest that these are the main reasons we don’t build housing. How about government corruption and special interest groups as big factors in the problem? Most of the time housing projects are blocked by people who want to “protect minorities” or “stop gentrification” or get a kickback from some developer. It’s quite the opposite of wanting to exclude minorities or raise property values.
Most of the time? People definitely want to stop gentrification in working class neighborhoods, but if you live in the Marina or Silicon Valley, there’s already been gentrification. Wealthy homeowners absolutely do block new housing in wealthy neighborhoods.