I'm far more worried about Chinese emigration. It used to be that Chinese students came to Canadian universities and then start companies like ATI. Now they come to Canadian universities and go back to China or Taiwan and start companies.
This is more of an interesting concern, especially considering how much money Canada spends getting students in. I don't know the numbers for emigration, though. Have any figures?
It's possible that they still stay here, but don't start companies like ATI anymore. Being anonymous employee #5761 at ATI is cool too.