Here are the three "logical conclusions" I can envision an unmanned/drone warfare "revolution" becoming:
1) They become highly effective at destroying each other (drones), and there is a bizarre air war or drone war of unmanned systems just purely killing other unmanned systems. Nothing is accomplished since human combatants and civilians don't die in large numbers, or in any manner that would affect the outcome/original state of affairs that led to conflict.
2) The drone thunder dome does not get created and there is asymmetry. One side executes an effective campaign of terror, prevails on the battlefield, and the next war returns to an outcome described in #1. Or before defeat, nuclear war ensues.
3) Drones become an accepted tool in the battlefield toolbox, and have strengths and limitations, like any other weapon system. They will be effective at the tactical level at times.
I suppose you can guess which option my money is on