The only people I know working in FAANG up here in Canada are all at Amazon and AWS. They have a fairly large presence here in Vancouver.

Some are Canadian, born and raised, but many are immigrants to Canada. If you were to ask most of them, I think they'd say that they'd prefer to stay in Vancouver, despite the lower salaries. The alternative for them would be Seattle.

I've never lived in Seattle personally, but the tech workers I know who've lived in both Seattle and Vancouver have all said they prefer the lifestyle in Vancouver.