This is ridiculous. That some cities in the US are unaffordable and becoming more so is a result of democratic decisions. Californian voters are like Irish voters, disproportionately property owners, and you see the same insane rise in property prices in much of the English speaking world. There are the occasional bright spots, like Seattle but the problem has a bloody obvious solution, build more housing. Tokyo’s rent and house prices have been basically flat for two decades while population increased by 50%.
San Francisco has the planning and zoning and housing it votes for, just like New York. If the desirability of any area increases and housing doesn’t then housing gets more expensive.