They have over a billion people have have made significant investments over decades to indoctrinate nationalistic fervour. They have zero need to attract anyone. By statistics alone they have more “bright, creative” people than US+UK+EU combined, and far greater willingness to employ those people for national goals. The same people we have working on adtech and similar nonsense.
They do not need anyone to migrate, which is entirely different.
America has been a superpower based on capitalism for under a hundred years. That isn't long enough to see if it's a better way of building power than other philosophies just yet.
This seems to me like a bag of words, not a real concept that means something. It's like saying America is "a superpower based on Christianity," or "a superpower based on immigration," or "a superpower built on the back of slavery," or "a superpower based on the proposition that all men are created equal." Capitalism isn't even a philosophy, it's a side effect of freedom.
Is it? In the country where capitalism came from "in 1831 a mere 4,500 men, out of a population of more than 2.6 million people, were entitled to vote in parliamentary elections" http://www.nationalarchives.gov.uk/pathways/citizenship/stru...