Depends, some of the technologies aren't developed in those countries yet. For example, the father of the Pentium chip, Vinod Dham, came to the US on a student

Depends, some of the technologies aren't developed in those countries yet. For example, the father of the Pentium chip, Vinod Dham, came to the US on a student visa. I really doubt he would have been able to contribute similarly if not working for Intel. Some contributions need a lot of infrastructure and capital, like start of the art labs.