Seattle is bursting at the seams! There’s always Portland...which seems to be mostly a one company town these days (not counting Intel).
That other company might have to pay more competive wages if some competition for talent showed up.
Seattle and environ have the same geographic constraints as the SF Peninsula. limited flat area between bodies of water. the growth will have to start spreading out at some point. commutes from 50 miles out are taking almost 2 hours at peak times into the downtown of Bellevue, Redmond or Seattle. They are putting up a campus down in Kent but I understand that will be a fulfillment center. the cool and hip will continue to want to stay here, its urban vibe and international flavor are unique and the weather is far better than TX AZ or almost anywhere else. No bugs snakes tornadoes or hurricanes. Just gawdawfully expensive RE . I am in the market but as a new buyer I am having to look at Skagit or Thurston or Kittitas Counties for a decent affordable place.