If "our" means the US and it's people as a collective, then it really seems clear that it wasn't in our collective economic interests either. If our means military contractors, then yes they made out very well.
It was in interests of the oil companies as well, and by extension the interests of the leaders of the country who are effectively on their payroll.
But yes, "our" in this case was perhaps a poor choice of words to refer to the interests of, for lack of a better term, the ruling class, whose interests do not align with the vast majority of the country.
If "our" means the US and it's people as a collective, then it really seems clear that it wasn't in our collective economic interests either. If our means military contractors, then yes they made out very well.