The main reason it probably won't happen (I won't say that it can't happen...) is that in a lot of these "3rd world" countries, the locals make more than we (the ex-pats) do. They can train as many people as they want, and even if they do manage to come up with all the qualified bodies to fill the seats, they'll have to pay them more than they pay the ex-pats. So, not any great concern about third world pilots flying all the int'l stuff. (Why would they pay extra thus making lower profits???). The unfortunate reality is that we (Americans) have become the cheap labor throughout the world...