About 85 percent of the soup sold in the United States is Campbell’s brand. Is Campbell Soup Company a monopoly firm? Price discrimination is practiced by movie theaters, motels, golf courses,...

About 85 percent of the soup sold in the United States is Campbell’s brand. Is Campbell Soup Company a monopoly firm? Price discrimination is practiced by movie theaters, motels, golf courses, drugstores, and universities. Are they monopolies? If not, how can they carry out price discrimination?