It's the "hidden" rewards of winning the war. The US didn't take any territory (cept leaving bases behind). But they can reap the financial control and profit immensely via this indirect control.

This is why the US does not want https://en.m.wikipedia.org/wiki/BRICS to succeed and will do much to sabotage it.

In the world of politicking, there are no good guys - just lesser of evils (or better the devil you know).