Partially. They are multinationals, and while there is a lot of money moving around in the USA, it's not bigger or worth more than the rest of the world combine

Partially. They are multinationals, and while there is a lot of money moving around in the USA, it's not bigger or worth more than the rest of the world combined. At the same time, they are often legally split up so the USA part is very small and (on paper) insignificant.