But as stated, times are changing. Power will not be about you commanding lots of people, but it will be about how many robots you have under your control. Military, police, etc, can all be robots.
Your robot army just has to match the fighting power of the unhappy people.
If it comes to that. I'm still somewhat hopeful that democratic processes and altruistic members of the elite will sort things out in the next century.
I've heard New Zealand is highly prized by the powerful. That being said, their days are probably numbered as well.
The new aristocracy will have robotic soldiers with no empathy for people.
It's ironic that the robot owners don't make, program, direct or have much to do with the specifics of implementing. If you're dependent on a robot army to keep your serfs in line, then the people programming that robot army have some interesting opportunities open to them. I imagine the code reviews will be pretty stringent.
Would a technocracy be better or worse than a plutocracy?