That's a good point. I think part of it (at least in tech) is due to the fact that big tech companies focused on hiring the best people from all over the world, which reduces even more the chances of local unfavored minorities. I'm from France and stories of people going to the USA to work at companies like that are common. I don't think I would feel underrepresented as a French if I worked at Google or Facebook or an equivalent. This allows the USA to do a brain drain of global talent, which helps a lot at being the best in the world. On the other hand, that means that the local people are compared against a global market, which makes things harder from them.