Asklemmy

That. And usually the stick is a very metaphoric one. As long as mechanisms of power exist, someone will have some kind of upper hand in any and all situations with other people.

For instance, if you're rich, you can throw more money at a situation and buy good results. If you have a big army, you can threaten someone into doing something for you and they know you have the manpower to back the threat up with actual force. And if you have a lot of connections, you can get stuff done via good will.

Ultimately, you need a government that, as a unit, has the authority to say "WE are the top dogs and there is nothing you can do about it." Ideally that system is malleable enough by its subjects to always act for the betterment of its subjects, and to hold its members to account.
In the absence of a formal government, that position is filled up by someone else. Either whomever shouts the loudest, has the most friend in the best places, has the biggest pile of money, has the biggest group of bullies, or some combination of those. In fact, that is how most kings' dynasties in history probably got established.

Just like nature abhors a vacuum, society abhors a power vacuum, and the moment you get rid of a king and do nothing to follow up on his removal, someone else is gonna take the throne and the crown and make himself king.

And before you start the republic spiel or the representative democracy spiel, a republic and a house of representatives are basically a royal court with more checks and balances, where the people on the outside as a whole get a say in who's in that court. It's basically regularly emptying and refilling thrones and having rules on how to do so.