And to simplify, there’s also really only two reasons to move:
1) more interesting work opportunities; and
2) more money
And the delta on (1) has never been smaller thanks to remote work post-covid (even after all the RTO).
So basically, at some point, you start asking if the extra money is worth it.
(Depending where you come from in Canada, lifestyle in SF might be better overall - but then you can just move back to somewhere else in Canada and have it all.)