The USA military-industrial complex may be soulless and evil, but it isn't dumb. The problem with the governments installed post-WWII in West Germany, France, Italy, and Japan was that they never evolved into belligerents. Iran, Iraq, Israel, China, Korea, etc. demonstrate a more sophisticated model. Repeat business FTW!

(While USA invasion has turned out well for some nations, that hasn't happened recently. If you care for your nation and its inhabitants, you really ought to do your damnedest to stay off the list.)