US District Judge Florence Pan’s decision to block Penguin Random House LLC’s planned $2.2 billion acquisition of Simon & Schuster represented the US Department of Justice (DOJ) Antitrust Division’s first major merger win following a string of losses this fall. Judge Pan’s decision is significant because she accepted the DOJ’s theory that the merger would lead to lower compensation for best-selling authors. This decision may embolden the DOJ and Federal Trade Commission (FTC) to challenge more transactions based on the impact on labor and salaries rather than the impact on consumer prices.