The Guardian: "Scraping by on six figures? Tech workers feel poor in Silicon Valley's wealth bubble"

There’s nowhere to sprawl. SiliconValley is a valley with a bay in the middle of it, surrounded by mountains that are either public land or have (for good reason) 5 acre or bigger zoning. The flat land is all built up. The answer is denser housing, but NIMBYs won’t allow denser housing.