Speaking as a Canadian who moved to the US for work, I think a huge reason is that if you’re an ambitious Canadian it’s a lot easier to move to the US than tryi

Speaking as a Canadian who moved to the US for work, I think a huge reason is that if you’re an ambitious Canadian it’s a lot easier to move to the US than trying to make it in Canada. I can’t speak to the other external factors, but I think brain drain to the US is quite significant.