Smith (2020年7月23日). “HBO Max Has Yet to Entice Key Group: People Who Already Have HBO”. Bloomberg.com. Bloomberg News. 2020年7月23日閲覧。 “The company announced Thursday that 4.1 million customers activated the HBO Max service within a month of its May launch. But that compares with at least 25 million HBO subscribers [who] could access HBO Max though a wholesale or retail channel.”