The problem gets solved one way or another. From collapsing empires to bloody revolutions. Extreme wealth disparity has marked the end of every empire.
There are a handful of experts on what might be called the holistic, interdependent nature of complex societies. Most with, the exception of Jared Diamond, would classify global capitalism in catabolic collapse already, Diamond thinks western civilization has a 51% change of surviving – I would not be so generous.