I don't understand how this happens. The tech industry is pretty much the only economic game in town. How does it fail so hard at politics, losing out to a relatively small amount of middle-aged homeowners?
Secondly, the analysis that it's a few rich homeowners is not accurate. Since the early 1960s, Silicon Valley has been associated with low-density housing and low-slung office buildings. Which is why the space between SF and San Jose looks the way it does. It's an entire cultural perspective this issue is up against, not just a few homeowners.