People have done the personal responsibility thing since I was a kid at least, it just doesn't work if there are no global rules who enforces it in some way (laws, prices, ...)
There was this graph about the time between major inventions, going back to agricultural stuff 10.000 years ago, and it like halvened each X years quite reliably, we are in the part where in some years it might touch like minutes. Interesting.
You're deep down a conspiracy rabbit hole my friend, several things are true (buying stuff from the USA, sometimes slahing social programs) but that doesn't mean there is a link between them (by the dark hidden secret cabal!).
We're just upping defense spending because it went from 7-9% (cold war era) to too low recently because we thought Russia was going to stop being a royal pain in the ass. Which they didn't.
And probably buying shitty meats for starters.