On “elite overproduction”
Here is my related hypothesis: we now put more weight on many smaller lower-noise status markers, instead of fewer bigger noisier markers. In particular, we put more weight on markers of connections to statusful people and institutions.
For example, early in ancient empires, many rose in status via winning military battles, or perhaps by building new trading regimes. But later in such empires, status was counted more in terms of your connections to other statusful people. Which led to neglect of military success, and thus empire collapse.
So early on, ambitious soldiers tried to figure out how to win battles, and to get involved in promising battles. But it was hard to guess just how to do this, and outcomes were noisy functions of efforts. So no one could be very sure of their future status, or with whom to associate to gain status. But later on, ambitious soldiers would need to come from the right family, and make good new social connections. So they worked to make sure they wore the right clothes, went to the right events, flattered the right people, joined the right groups, and so on. In this world, they could more easily see who was higher status.