Hello,
I totally understand your frustration. Yes, that really sounds true that if they want int. students to come back then why they have opened options for a work permit and PR. You know all these countries are smart enough they know how to play but we Indian we get involved in this game by our self only b'coz we do not get any good opportunity in our country or else we would have never indulged in this ielts and visa games. And, PR & Work permit, is just an asset to tempt people to attract towards Canada, if they remove this options no would ever apply for studies to this country at least from our country. And, if they open all options then our country will become less populated in the world I hope you understand what I meant everybody will leave in the end.