Charwoman Gene
Adventurer
You seem to be missing the point: your social contract (whichever one you choose) exists.
You are missing the point that some social contracts involve a leader. An iron fisted leader that all the players accept the mad, arbitrary decisions of happily. That's still a social contract. Maybe not one you would like but whatever. You seem to somehow think that because you play D&D in a certain way that all groups have the same social contract. Some social groups have static relationships that allow other behaviors.
Imagine "Stinky Pete". Pete is a loser who has no social skills, lives with his parents and spends 40 hours a week crafting his adventures. He is an iron-fisted rat-bastard DM. His players are his younger cousins and a friend of theirs, and her taught them all to play and they are all super casual and have ZERO desire to DM. And they live in a very isolated rural area. This contract is not yours.