Isn't the drip-drip-drip of single soldiers running around the response to artillery in the first place? Any concentration of manpower attracts artillery and if it's significant, HIMARS gets called in. Naturally, the response is to disperse men and make artillery less effective. The response to that is FPVs chasing down the individuals instead. They're a counter to a counter and can't be judged in isolation.
My point is that it is difficult to imagine another peer conflict in a similar geographical type reaching such a level that budgets should be diverted in a major way to develop these devices in the hope that they are some miracle weapon. Layperson politicians read headlines and think they are a first-level counter and not a counter-to-a-counter as you said :)
That is true, although I think a lot of what can be invested in, is transferable. Control software, targeting, AI could be adapted to larger or smaller scale drones. Manufacturing capabilities can be as well. ISR drones are pervasive and it used to be uneconomical to shoot down a relatively cheap one, like an Orlan, with something that cost as much or more. Now there's cheap counter-ISR FPVs. I don't think the future is manually guided at all though.
Drones could be manufactured from standardized components, LEGO so to speak, allowing for add hoc redesign and automated manufacturing . Foilwrapped fuelcokecans with a primer and a bus are where its at .
