Not really sure what the buying couple saw in the area. The house was really well-kept and updated but I feel there were other homes in much better surrounding neighborhoods for a similar price-point..
https://www.sfchronicle.com/business/article/Google-s-Bay-Ar...
I'd venture to guess it's somewhere around 60k net new families to the bay area just from those 3 companies.
The end is definitely not in sight.
The Bay is choking on golden chains.
That is, those companies "overflow" into other cities/countries because it's too expensive and there's not enough supply, but the moment you build more and the price would go down, some people who would have left don't, and so the price won't move downward. You'd have to flood the market faster than the big companies hire and startups grow to make a significant change, and that's a LOT of extra capacity to create.
Realistically, making other cities more desirable, encouraging the big tech companies to open more satellite offices than they already do, and more focus on working from home for people who can is likely to make a bigger difference than anything SF itself can do on its own (bonus, it would help other cities like NYC and Boston too!)
But, with the big employers, they're sufficiently big that everyone's no longer co-located in any meaningful sense anyway. Amazon seems to have already gotten this message with respect to Seattle (not just HQ2 but also, e.g., their Alexa building/hiring in the Boston Seaport).
I'm not sure how this plays out. Hopefully not with some massive tech crash. But I have to believe we're hitting (or have hit) peak salary for new hires in the Bay area and, at some point, most people are not going to live in a dorm to work for Facebook. And, if they are, that's sad.
At least its how it feels like.