Being rich is ultimately about owning and being able to defend resources. IF something like 99% of humans become irrelevant to the machine run utopia for the elites, whatever currency the poors use to pay for services among each other will be worthless to the top 1% when they simply don't need them or their services.
Would we just be splitting society in two in that case? Seeing as the poor would have nothing to give to the rich, nor the rich to the poor, wouldn’t the poor 99% just create their own new society with their own units of value?