All essentially correct, especially that a profit-oriented defense industry will produce wars, not peace, as it profits off of those a lot more than it would off of harmony.
The thing that's missing is that below all this, there are more than a handful of billionaires; if it only were that easy, that would make a solution much more viable.
The thing is, though, that the US has exported almost all production (except military, not ironically.. and social networks, i.e., information production industry) and now relies on a financial economy built on derivative trading and real estate speculation.
This leads to a) the US GDP being massively overstated, as all of this fake money is counted as part of it; b) the US being 100% reliant on the export of dollars it prints for free to other countries, who trade in dollars, thus creating - until now - a black hole that sucks in these freely printed dollars.
This, in turn, means that the very survival of the US, which again produces nothing, is predicated on it being to throw printed money at the world to buy their goods, which it thus receives essentially without anything given back, except soms digital 1s and 0s, and propaganda. In turn, it uses the only thing it does still produce - fighter jets and information - to subdue these other countries into still doing this.
If other countries start ditching this system, the US is left with nothing. They have tried: Iraq, Libya, Syria, Iran, Russia, Venezuela, China. They were all visited by them mob's thugs, with more or less "success", ie., destruction, depending on their ability to defend temselves and to rally allies.
So there's an uneasy symbiosis: the billionaires that own the military and information industries profit hugely, yes, off of all this; but the US needs to throw money at them, as it needs to keep up the institutinal robbery that is the financialized economy to survive as a nation that has food, houses, and pools. With fighter jets and social media lies.
Tehere is a circle of robbery going on here that isn't just limited to a handful of billionaires.