Anecdotally, the Northwest has been complaining about people from CA moving up and "ruining the place" for decades. (see: "Californians driving up our housing costs", "Californians don't know how to drive", etc. I grew up in the Seattle suburbs, and it was a common refrain in the 80s and 90s, and I'm sure it goes back at least to the 1962 World's Fair, if not the early days of Boeing.
Also anecdotally, I moved to the Bay Area, my parents moved (back) to SoCal after 40 years in the Northwest grey. Plus, I have 4 dot-com era friends who have moved from the Seattle tech boom to the Bay Area tech boom, all in their late 20s/early 30s (so not just-out-of-college types), and I know a few others who are considering the same. And I don't know a soul from here who moved north, except for people who came down here for college and then returned home.
I guess it's like they say, "the plural of anecdote is not 'data'".
Also anecdotally, I moved to the Bay Area, my parents moved (back) to SoCal after 40 years in the Northwest grey. Plus, I have 4 dot-com era friends who have moved from the Seattle tech boom to the Bay Area tech boom, all in their late 20s/early 30s (so not just-out-of-college types), and I know a few others who are considering the same. And I don't know a soul from here who moved north, except for people who came down here for college and then returned home.
I guess it's like they say, "the plural of anecdote is not 'data'".