From a pure game-theory perspective, consumers are important for their potential labor. As long as there is something productive that they can specialize in tha

From a pure game-theory perspective, consumers are important for their potential labor. As long as there is something productive that they can specialize in that might give your group an advantage over other groups --- it is useful to produce and distribute all the things which keep them productive. Maybe 100% of your population will be trained as scientists and mathematicians just on the off-chance they can discover something that AI cannot and give you an edge over other similarly-advanced groups. If the AI's can truly replace humans to the point where there is nothing useful for your humans to be doing, then it would cease to matter whether or not the rulers produce and distribute the things the consumers need/want. You'd need good enough AI security to handle any unrest which ensues, and protect any natural resources that might be important to you. If you no longer can utilize any of the labor of your consumers, then the only products you need to make are: 1) The things you personally want, and 2) The things needed to maintain sovereignty against any other similarly advanced groups. Category #1 would be a very small volume, but Category #2 might be industrially more than the entire world's current production of everything, just for your fiefdom. It would be unstable until someone conquered the entire globe, and would likely only need to provide for about 500-5000 people in their "court" to provide for the rulers own selfish social needs.