Services feed me every day, yet I don’t grow my own food. I trade for it, using currency as an intermediary.
What I can do for myself, nations do every single day.
I don’t know what this “real power” language is about, but it sounds like claptrap to me.
It actually sounds like you live in an era where these things are guaranteed by a hyper power and are frankly out of touch with how international relations really work