> Well the problem is US wants to be the world's managers.

I think the problem is more nuanced than that. The US was effectively "the world's managers", in the sense that their economic might, entrepreneur culture, and push for globalization resulted in a corporate structure where the ownership and executive levels were US whereas non-critical business domains reflected the local workforce, whether it was the US or not.

This setup worked great while the US dominated the world's economy and influenced their allies and trading partners to actively engage in globalization.

Now that Trump is pushing for isolationism, of course things change.