Yes. One they- or the orb, more likely- would like to maintain, given that people can apparently change their regret- albeit at a price.

[Which somehow makes Sabriel slightly less suspicious. Even with magic, all things have their price. Being upfront about it is just more honest than claiming it's for free.]

It gives everyone motivation to cooperate with each other. Even if there's always the question of what happens if someone gets truly desperate.