I think your criticism is perfectly valid. I'm not suggesting that someone wave a wand and double supply tomorrow. I'm proposing that people should support increases in supply, changes to laws that make housing less affordable, and infrastructure spending to support new housing. You're right, it won't be easy, but I believe that moving the problem elsewhere, just moves the problem elsewhere. If everyone in tech goes to Austin for example without some plan for density, you'll either get an affordability crisis, or sprawl which is terrible in myriad other ways. Maybe SF is a lost cause, I don't really know.