I believe it's already happening, but it's not as straightforward as people imagined it'd be.
Like for example, the healthcare costs. I think that's a filter to see who can survive by paying the absurd amounts. Therefore, people will die if they can't.
Recruit people for the military, send them off into battles, eh a few hundred or a thousand die - more filtering.
Mishandling pandemics and ignoring solemn advice in how to handle them, 350k people died, what do you say President? "It is what it is" just more filtering.
So my point is, is people need to drop these fantasies of countries who actively plan to wipe out populations by sheer force and throwing bombs around.
It's already happening because we're dealing with con artists and cunning megalomaniacs.