Defense spending has never been a majority of US GDP, at most representing just over 40% at the high of WW2, reaching at most 12% of GDP again during the Korean

Defense spending has never been a majority of US GDP, at most representing just over 40% at the high of WW2, reaching at most 12% of GDP again during the Korean war, but remained below 6% over the past 40 years. So how exactly are you proposing that less than 6% of the economy is directing the other 94%. Because that doesn't make any sense. For that matter, if war is so profitable and defense such a good market, why have so many companies which used to have major defense business exited that business? In WW2 just about every big business was partaking in the war effort. Companies like Ford Motors was producing aircraft and tanks. Ford has long left defense, and what remaining companies are in the sector have been consolidating or dying. Not exactly the sign of a booming industry.