Since the elites are massively outnumbered, the origins and stability of unequal divisions of the cake are puzzling, especially once we realise that this is a very recent aspect of our social existence.
Our particular species of humans has been around for about 300,000 years and, best as we can tell, for about 290,000 of those years we lived materially poorer but much more equal lives.
There are two developments in mobile forager cultures that tend to set the stage for the establishment of inequality. One such scaffold to inequality was the emergence of clan structure. Clans have a strong corporate identity, built around real or mythical genealogical connection,