We're slowly losing everyone in Mountain View except dual tech income people who won the stock option lottery, houses are out of reach for most everyone. What does get built via ABAG (Association of Bay Area Governments) mandates is generally rental housing, and rents are astronomical.
This kind of short sightedness is disgusting, and people don't seem to realize that nice, high density areas didn't just spring up in their dense form, they were allowed to evolve over time.
CA also has a lot of red tape anyone can invoke on any construction project to drown it in bureaucracy for years. The only people willing to fight against the bureaucracy are giant developers who develop large lots into cookie cutter developments. It's a giant mess driven by greed and stupidity.