At a blush I agreed with you, but then I thought a bit more, and now disagree. The presumption is that the local intellects will be developed, if just develope

At a blush I agreed with you, but then I thought a bit more, and now disagree. The presumption is that the local intellects will be developed, if just developed nations would not take them. This is not as likely. The counter, where foreign educated people come back to home country is. This way the birth nation gains the foreign nation's intellect.(plenty of anecdotal evidence) Will this be the case all the time? Of course not. The follow up question is, how many will return, where is the break even, where is the educational level, etc