The world economy is huge and growing, and the US economy is damn strong with a significant share of it. It also owns the world as far as raw military power and power projection goes. The US would absolutely use its huge military and economic advantages to keep its position as top dog if necessary. It is fine that the world’s economy is growing (inevitable after the devastation of ww2, which barely touched the US; also industrialization in countries like china), but it doesn’t mean the US is any weaker for it. And anyone who thinks the US won’t keep its rivals in check (no doubt leaving a trail of bloody corpses behind) has not been paying attention.
It is pretty easy to imagine separate streams of updates that affect each other negatively.
CrowdStrike does its own 0-day updates, Microsoft does its own 0-day updates. There is probably limited if any testing at that critical intersection.
If Microsoft 100% controlled the release stream, otoh, there’d be a much better chance to have caught it. The responsibility would probably lie with MS in such a case.
(edit: not saying that this is what happened, hence the conditionals)