Elon Musk, when talking about the tumult that he often creates, likes to cite a line from the movie “Gladiator" when Russell Crowe’s character finishes slaying his foes in the arena: “Are you not entertained?" If nothing else, the year 2023 for Elon Musk was filled with drama. Whether it was entertaining is a different question. One day the billionaire is the self-proclaimed Technoking ushering in a bright new future with SpaceX’s giant rocket Starship taking its first launch in April. Or Tesla’s long-delayed Cybertruck beginning deliveries in late November. Another day, Musk is tweeting support for antisemitic vitriol (he...