The nice things about nobility (and by extension, dictatorships) is that the buck stops with one person. You can get what you need by having one decree (at least until their mind changes).

By extension, you can fix a problem by killing/overthrowing one person.

The truly scary thing about both governments and corporations is that they are remarkably resilient power structures. Consider: would removing/jailing/prosecuting the entire board of directors/C-level officers of a company truly kill it? Could it just be taken over? Would its property, patents, IP, employees, etc. become public property, or just food for another entity?

It's pretty terrifying, actually.