It's very profitable, for some, to fight a War
It's also very profitable, for others, to win the War and take control of the country.
Remember how the neocons gleefully went about 'privatizing' and opening to 'international investors' the conquered Iraq? That didn't turn out well for US elites, but the intention was to make $trillions off the conquered country...
I'm just saying I read a lot of comments, and articles, that never mention the second part, eg:
10 companies profiting the most from war
(Lockheed Martin, Boeing, BAE Systems, General Dynamics, Raytheon, Northrop Grumman, EADS, etc.)
As you mentioned, the bankers were poised to take over Iraqi financial industry before the occupation unraveled... and they hoped to do the same after the coup in Ukraine, for example. That's an integral part of the expansion of empire.