Succession, the popular HBO soap opera about a family of hideous media moguls, will come to a close this weekend. It’s a supremely glossy and expensively-made TV show about supremely glossy and expensively-made TV. The in-your-face self-referentiality distinguishes Succession from shows like The Sopranos and The Wire, earlier “prestige” classics that likewise reflected—and shaped—the zeitgeist. […]