Tech-driven transplants strike me as a related but slightly separate issue. Yes, they make up a large portion of the recent influx and gentrification needs to be addressed. I don't have a good solution for this and it deserves a lot of discussion, but ignoring the rising housing demand is certainly not the answer. If anything, that will force out even more tenants who can't afford tech-salary rents, right?

The Bay area is at the heart of the Third Industrial revolution and hopefully will continue to be a driving force in the Fourth. Not evolving city infrastructure and housing to match this strikes me as Luddism.