Following on to this, I would not be remotely surprised if drones continue to be a threat to see something like a man portable gepard hooked up to an EW system, as given the speed those things move and how hard even hitting regular old Canadian Geese or errant clays under non-combat situations, I don't know how you would economically fight drone swarms short of a mini Phalanx CIWS or something.

Maybe ironically, I wonder if we won't see things like the Bofors 40mm guns continue to be prolific if they get successfully retasked to fighting drones (and they would end up like the M2, fighting long after it was initially conceived).