My tentative diagnosis:

[bucolic_frolic]

3. Can't agree with "severe stress as things collapse"

This implies a sense of guilt or fear. But in his mind as long as he as control, nothing ever goes wrong! All is right with his world in his mind.

Wealth exaggerated his power and sense of self. He's essentially like a lot of people, but with psychological components magnified by life-long privilege. The world has seen many a royal despot of similar bent.

BTW, is democracy doing a better job of filtering out the lunatics than the system of royal succession ever did? I mean to say you can argue and question if the elections were fair or stolen, but democracy elected our bunch, Stalin, Hitler, Mussolini, many in South America? I might agree with the idea that the pathways to power for potential despots are more open now, in democracies.