...or, maybe, education?
The $3k cost per person of a $1T plane makes me feel inclined to think about what else could be done with that kind of money.
So, while drones might be a "better" way for the military to spend $1T, I think it's worth entertaining the idea that there might be a better way for a nation to spend that money. Like, say, on education.
Education is good for figuring out how to acheive your goals, including if those goals are "killing your enemy".
> Why would that be the purview of the military?
Because its a substantial force multiplier.
And a insurgency with smart engineers and chemists will be one hell to contain.