I don't think there's enough manufacturing capacity in Seattle to absorb this. There are plenty of CMs here but they're small and midsized, not the big boys. And they're not in the habit of running mostly empty.
And they’re not the sort of places where you get boards for consumer electronics made. They’re doing microwave/high frequency boards for companies like Boeing.
They'll absolutely do consumer product assembly. It's short-run versus mass-production that's the real problem, most of them just aren't set up for high volume.
Board fab though, not so much. I don't think we have a PCB fab left in the area after losing Prototron. I'd be more sad about that, except that I don't think I ever had a single order with Prototron that actually went smoothly and came back correctly.