Read the linked TechCrunch article...it's really a great explanation of everything that's going on. One good example was Mountain View working on a commercial development that would bring 42,550 jobs to the city while only creating additional housing for 7000 people. This in a city where already far more people work than live. To Mountain View, it's simple...residents require more services like schools, fire departments and police than do office complexes. But those workers have to live somewhere and cities like Mountain View that are acting selfishly are pushing rents up in nearby cities.
Two of those cities are San Francisco and Oakland. Both cities have a lot of housing when you ignore one minor detail...the current residents that would need to be displaced. But since all those jobs in Mountain View pay way more than the current residents make, developers and landlords are only too happy profiteer off the well-compensated tech workers by pricing the current residents out of the market.
But, as the piece lays out, it's not tech workers that are to blame and, for the most part, not tech companies either. It's mostly local and state government's 30+ years of stupidity that's led to this. Starting with prop 13 in 1978 and the backlash that led to rent control laws, government created an environment where homeowners fight tooth and nail against new housing and rent control drives rent up by distorting the market. The ensuing difference between controlled and uncontrolled rents causes conflict between tenants and landlords who see how much money they're losing each month. So the city adds even more idiotic regulations that ensure a certain amount of housing is sold/rented below market rates, which has income restrictions that just about guarantee that poor people won't be able to afford them...but zero-income children of parents willing to cosign qualify quite easily.
Meanwhile, companies keep growing/starting up and more and more high-paying jobs keep coming to the area. But thanks to all those "I got mine, screw the rest of you" homeowners who keep new developments from being built, those jobs come without the corresponding increase in necessary housing. So what are current landlords to do...every form of meddling is forcing prices through the roof to the point where only highly-paid professionals can afford them? You could either sit by and allow your tenant to pay you a small fraction of what the place is worth (and sometimes rent it out for full price on AirBnB...no rent control there) or you could use some sleazy tactic to evict the long-time tenant and let the boom dollars roll in. Also, notice I didn't say tech professionals...we make up less than a quarter of the well-to-do SF population...there's more finance than tech.
As per usual, the ones most hurt by this are the working poor. The abject poor are doing the same as ever...when you make zero and live off city-provided social programs, rent prices really don't affect you all that much. But the people trying to be productive members of society are basically forced to move away and commute back to the city. And this has some really nasty side effects...like police officers who have no real attachment to the community they serve because they've been priced out of living there.
Protesting the Google bus makes for a great shot on the 11pm news, but is otherwise counter-productive. If we want to fix the issue, we should:
a) Repeal prop 13, rent control, the below-market-rate program and all the other government meddling.
b) Tell homeowners to go fuck themselves and start building new housing as fast as we can.
c) Add significant tax incentives for people who live close to work. This would have the dual effect of being "green" by reducing commutes and making it unattractive to work in cities that do not provide enough housing to support the businesses there.
Alternatively, we could just accept that poor people will need to move and let it happen. It's heartless, but given how bungling government is, it's pretty much inevitable. The unfortunate part is that what's considered poor is almost ridiculous. Someone making $100k/yr will basically never be able to afford to buy a home in SF.
See...SF and Oakland have a lot to do with Silicon Valley :-)