A really bad problem in these countries is their best in brightest are too busy doing service jobs for Westerners than doing the work in manufacturing and infrastructure that builds their capital base.
So this is going to make them poorer and cut an income source for the country as well.
Poor countries are not poor by choice. And removing avenues of financial support (and an import at that) is not a net positive.
"Income source for the country"? Having your brightest employed in foreign ventures is a great loss for the country.
I would just sit idle if I were not solving assignments.