The degeneration of the monarchy.
It’s actually not really a bad thing to have a monarchy of royal families and a class of people who are the royalty But the problem in humanity is that for centuries and millennia that royalty has completely degenerated and become depraved, stupid, etc. And in some cases they they hold secret technology, secret technologies of magic, and ritual, secret knowledge yet they are totally unfit for it and use it for control and power and depravity