I wouldn't be surprised to see countries such as BRIC members, EU members, or other countries start trying to woo the best and brightest for economic gains.
I think this focus on the "best and brightest" is actually a part of the problem. Sure, you'll need certain skills to run a research group, but these skills are found in many people and not just in the top of the batch. Beyond a certain point, the individual abilities of a researcher tend to be only weakly correlated with the actual research outcomes. There are many examples of people doing amazing science even though they are generally not considered to be top-notch scientists, even including Nobel laureates.
Science is an inherently risky business, with most scientists not finding out anything really exciting during their entire career and only very few ones will hit something that turns out to be really big. But you cannot possibly know in advance what this next big thing is going to be and who will find it, otherwise this wouldn't be science at all. In such an environment, the best investment strategy is to allocate your funds evenly across as many scientists as possible (I think it was Taleb who showed that). Of course, you have to make sure that each scientist gets enough money to run his or her group, but this optimal strategy is exactly the opposite of the current trend towards mega-chairs involving multiple labs and dozens of grad students and postdocs.