The elites would be making stockpiles of rarer elements that less likely to be found in the asteroid belt. Independent power, farm land, etc. If an AGI cooks up a fusion generator and a cornucopia machine, rare (but necessary) elements will be required short term, for a few years until AGI begins to industrialize the solar system. More exotic, high performance alloys (like rhenium for high temp jet compressor metal) & machines.