Is living in a state implicit consent to be governed and if not why. Maybe I'm a little dense but I'm not sure how the restaurant analogy applies to a broader social contract.
"My house my rules."
vs.
"Your house my rules."
It's customary for people to expect to pay for food they order in a restaurant. It would be hard to claim that you didn't know that was the custom. However, secession is what made the USA possible.
It's just as possible for people to remain being governed or secede. There are two customs, though one is more popular than the other, it's still something that has to be made explicit.
Maybe someone should have reminded Lincoln of that.