Screw The Money, I Have Rules!: The subject of any of a few thousand plutarch fairy tales concerning the nature of money as a symbol, and the worthlessness of a symbol without the things that give it meaning.  (The Market Liberty Oversight Directorate, in particular, is particularly harsh on anyone whose approach to money or markets is harmful to said money or markets.)

(And given the very long lives most plutarchs can expect to have in a universe with immortagens, everyone understands that they’re playing the indefinite-iterated Prisoner’s Dilemma, in which the winning superrational strategy is not to defect.)