We've created our own problems with low density zoning which makes it difficult to scale out housing in geographically constrained areas with strong economic growth like the Bay Area and Seattle.

There have been many threads recently which blame Amazon and other tech companies for creating Seattle's problems, yet other communities all over the US and beyond are clamoring for the exact same problem.

Seattle has gone a long way to accommodate the growth, but it still isn't enough. Too much of the city is zoned for single family residences. And the Bay Area suffers from the same issues.