There is a lot of money sitting at Apple, Google, and the rest. They could have easily use their weight, reach and influence to envision and build an entire tech city community. It's not that hard.
If a few lobbyist in DC can send the country into all kinds of wars, why can't SV companies use their weight to do something that can resolve this problem. It makes perfect business sense to me.
Instead, we get apartments build adjacent to CalTrain to act as sound insulation or they would not get approved. This is ridiculous.
To have a habitable area with a decent quality of life, you need all types of workforce. Teachers, restaurant workers, gardeners, etc. Where are these people going to live? When you see some houses filled with 7-8 occupant because they can't afford rent, you know this is not sustainable.
I've lived in the Bay Area since 1991. These days, for my work, I spend a lot of time working with our remote team in Minsk, Belarus. The thought of coming back each time to SV is distressful if it wasn't for the loved ones back home. There are many tech guys here in Belarus who dream of coming to SV. I remind them their quality of life is far far better than what they would get in SV.
So unless we get some true leadership in SV, that has a vision of making the Bay Are more habitable instead of trying to think about how to colonize Mars, this is going to get worse. The once almost utopian Bay Area is becoming rather dystopian.