So, realm taxes dukes. The dukes then tax the already poor rural regions to make up the lost gold. The rural regions start perhaps asking gold for the food that flows to cities. Dukes raise taxes on rural regions again. In the end, all this was a pointless exercise of fiddling with numbers in a lot of places that probably still landed the poorest regions worse off than they were and added another layer of complexity on an already complex game.
Perhaps, and if so that'S something I would totally want to avoid.
But for the time being, lords can just so easily switch duchies. Or sell their food to another city, even in other realms. In most cases, dukes have absolutely no power over lords.
