My experience in the field is about 15 years old at this point, but here is my take on it. Your supposition is premised on one of two things: (1) drone AI that can out-think a human; or (2) perfect communications between drones and an operator on the ground.
These are unsolved, and very difficult problems. The state-of-the-art right now is that we have trouble getting back the video feeds from our reconnaissance drones due to limitations in the downlink system. Drones also create new attack vectors--you might be able to ground hundreds of drones by taking out a handful of satellites or communications hubs.
It is possible that these obstacles can be overcome. But waiting on technology to be where you need it to be can be a very iffy thing. (Cue: "we were supposed to by on Mars by 2025."). I certainly wouldn't gamble the national defense on it.
These are unsolved, and very difficult problems. The state-of-the-art right now is that we have trouble getting back the video feeds from our reconnaissance drones due to limitations in the downlink system. Drones also create new attack vectors--you might be able to ground hundreds of drones by taking out a handful of satellites or communications hubs.
It is possible that these obstacles can be overcome. But waiting on technology to be where you need it to be can be a very iffy thing. (Cue: "we were supposed to by on Mars by 2025."). I certainly wouldn't gamble the national defense on it.