The most effective approach to power hoarding is to *break it up*. Make rules against it, yes. But they will find loopholes. Breaking up a power bloc is the same as destroying it. That requires a power bigger than the one which poses a threat. And so we get history: a never-ending process of building up power blocs to attack and dismember other power blocs. Meanwhile, regular people, with little interest in power games, try to live their everyday lives as best they can, in peace. At least, until they get hoodwinked or conscripted into the war machine, or merely crushed beneath its treads.