It's only a matter of time before there will be drone soldiers, too. War will be very expensive (or very profitable, depending on your perspective) with minimal risk to friendly people, reducing the main reason democracies don't like wars.
Building an AUV is ridiculously cheap, and can be done with off-the-shelf components. Moreover, other countries have learned from the success of our drone programs, and are rapidly developing their own. It is almost a certainty that we will have drones deployed against us in our next major conflict.
People tend to forget that there was a brief period where America was the sole nuclear power, and we could destroy whole countries with negligible risk to 'friendlies'. We had very similar discussions then. However, that monopoly of power didn't last, and the costs of deploying those weapons suddenly became infinite.
I suspect that a similar symmetry will arise with robotic weapons. War will get weirder, but it isn't going to get any less risky.
I doubt networks will respond by creating their own drones. Building a drone may not be too hard, but building one that can be operated from the other side of the world is much harder. Furthermore, it turns the conflict to an arms race in which they will find it extremely hard to beat wealthier nations.