But the serfs all paid taxes to the nobility for the right to live and work on their lands. They needed every one of them to raise enough capital to expand their empires and conquer new peoples to enslave. They couldn't print money out of thin air back then like today's nobles do.
Actually, they could, by reducing the proportion of gold to other metals on coins, but this is nitpicking on my side. In our hypothetical situation, tax money is no longer an issue, since we're talking about serfdom in a post-scarcity society. In this scenario, people themselves are the currency thus the necessity of keeping them around.
But the serfs all paid taxes to the nobility for the right to live and work on their lands. They needed every one of them to raise enough capital to expand their empires and conquer new peoples to enslave. They couldn't print money out of thin air back then like today's nobles do.
Actually, they could, by reducing the proportion of gold to other metals on coins, but this is nitpicking on my side. In our hypothetical situation, tax money is no longer an issue, since we're talking about serfdom in a post-scarcity society. In this scenario, people themselves are the currency thus the necessity of keeping them around.