His takeaway is that there is a yawning gap opening up between middle class and elites, and that neither group is well-served by this gap. The middle class have less mobility than before, at least when it comes to achieving super-elite levels. And the elite class work themselves to death and prompt their children to do the same.
1: https://www.amazon.com/Meritocracy-Trap-Foundational-Inequal...