There's his RAGE in ep 9 as well as the speech of the chairman in ep 16 or when it was.
People are able to endure quite a few things for the sake of the money before them. The rich take advantage of that characteristic, forcing others to serve for the rest of their lives, allowing us to live in comfort. Kings do not become kings by themselves. If the poor rise up together, declaring that they do not want any money, kings will be overthrown. However, the poor seek money so that they may become kings themselves. Which in turn only strengthens the position of the current king. They cannot escape that fruitless paradox.
Kings cannot be defeated as long as the poor desire money. The poor will continue to be bound. The kings will be wary and provide just enough comfort so that uprisings do not occur. Regardless of how hard kings drive them.