It's not always that a whiny, attention-seeking and prissy stallion takes the place of Celestia. For starters, he can't even brush his own mane. So if he can't take control of his looks without a maid to help him, that only begs the question. How will he take control of an empire?
He won't, is the answer.
You get thrown in prison. You get thrown in prison. You get thrown in prison. Everybody gets thrown in prison.