I know folks like to point at the big techcos in the area being flush with cash as evidence this can continue a long time. And in a vacuum, wage growth in tech could continue to keep pace, perhaps. But that is 300k in appreciation a year.
How far out will school teachers, janitors, chefs, mechanics, city employees, and similar need to live before their not-quite-as-quickly-increasing salaries fail to keep up, and they leave the area en masse?
Cut the NIMBYism and you might see some improvement, but only as fast as the city can approve permits.
As Buffett likes to point out: be "fearful when others are greedy and greedy when others are fearful".