> Historical norm is that manufacturers have played a huge role in warmaking capabilities
You're fudging away the critical distinction. How many of the 100,000+ tanks, warships, and warplanes built by US corporations during WWII were operated by those corporations in combat zones? Extremely close to zero - because combat operations were the job of the US Army, US Navy, USAAF, etc.
No, I don't like Mr. Orange either. But he is the current POTUS. Starshield is under his control. And his failures do not obligate Mr. Musk to step up and serve - any more than they obligate young American men to serve in the Ukrainian Foreign Legion.