Until and unless we meet aliens with 2 creases in their meat brains, a threefold triumvirate of human groups is the only sustainable path.
Any time a worldwide hegemony appears a threat, we need to split into a prime number of tribes and “continue the research” as it were. 3 will do. Otherwise memetic evolution will reach a complexity barrier.
If you think the answer is the west, and individualism, we don’t need a giant America we need 3 americas.