The true danger of robots for mass combat is that it moves the power squarely into Capital and away from Labor. As long as humans are in the equation, you can always have troopers (and the populace that birthed/supports them) say "No more, this conflict must cease".
If war becomes a matter of some rich asshole turning the murderbot factory knob a little higher to deal with the riffraff, we're in trouble.
These won't splinter nowhere near as easily as manufacturing.
I think though on a different scale, if your people aren't out there dying, it's easy to forget about the massacre and tryranny your country might be perpetrating. The out of sight out of mind problem.
http://www.westernfrontassociation.com/the-great-war/great-w...
Wonderful. When are they planning to start?
I don't mean to condemn them, genuinely charitable billionaires are doing a lot to improve living conditions around the world, but most of them aren't doing much to oppose the people who use their money to buy laws, lawmakers, and governments. (What they even could do without using the same corrupt tools is an open question.) A world with no hunger, no disease, and an absolute dictatorship of the wealthy is no utopia.
You see where it goes?
A structure where anyone can build a world-destroying monster implies that anyone remotely evil has to be destroyed, right? But that suddenly starts to look exactly like the program of "evil".
It seems like future will look like: benevolent dictatorship, butlarian jihad or end of humanity (and I wouldn't bet on robot survival either).