Because when power is unevenly distributed a few people can make boneheaded decisions that create misery for the many.

To point to the Russian experience the Tsar made the bad decision to take an odyssey the long way around Asia (and Africa for some ships) to attack Japan and they got their asses handed to them in a few hours. That was the first time Lenin and company tried a revolution and ultimately they made this feature film about it

https://en.wikipedia.org/wiki/Battleship_Potemkin

A few months back we had the spectacle of Elon Musk possibly buying Twitter (maybe he was in the running for asshole-in-chief) but I think he got some sense scared into him and he is keeping his head down these days.