You're oversimplifying things to an absurd level. A lot of American entrepreneurial wealth is made from goods & services made and sold in the US, so I don't see

You're oversimplifying things to an absurd level. A lot of American entrepreneurial wealth is made from goods & services made and sold in the US, so I don't see how American Foreign policy has any effect on it. Sure the established corporations do make a ton of money from international trade (Oil, Manufacturing, Electronics etc.).