Who benefits from the brain drain?

There is considerable debate about whether the mobility of highly skilled labor constitutes a brain drain or a brain circulation. A publication of the Association of Universities and Colleges of Canada makes it clear that to the extent there is a brain drain, then Canada is a large beneficiary (Hat tip: GlobalHigherEd). Between 2001 and 2006, more than 3,000 Chinese PhD holders emigrated to Canada. Another 1,200 Indian PhD holders emigrated to Canada in that same time period. I have to wonder how many yuan and rupees the Chinese and Indian governments spent on educating these individuals before they took their skills elsewhere?