My understanding is that Russia despite falling far from its USSR days, still had multiple times more capacity to make Iskander-s, than the US can make ATACMS (and Iskanders are way better too). The PrSM, the US based successor is just about to enter volume production, and will be years till they can be made by the hundreds.

At least that was the case before Ukraine started blowing up Russian factories. And for the rest of Europe, their capacities are somehow even worse.

And in any case, Russian missiles were a drop in the bucket compared to drones.

So building high performance missiles in a volume needed for sustained conflict is not something any military has managed to do so far.

(Not shilling for any side, just my honest opinion, plz dont dogpile on this, I don't care about any side's national greatness)