build. more. and this problem will go away.
this sounds nice, but neglects the fact that (1) materials cost has gone up and (2) zoning requirements exist. (1) means its just more expensive to build overall, and (2) means that a lot of proposals for apartment complexes get voted down.
also neglects the market's appetite for this risk of building in the current environment, which is the biggest problem. market gonna act like a market