Mr. Griffin insisted that every magazine include a masthead in each issue and that his name be on top, bucking a long-standing tradition at the company of leaving it up to individual editors whether or not to run a masthead. The mandatory extra page cost the company about $5 million a year, said a senior executive, noting that the decision came after hundreds of employees were let go in recent years.

WSJ: If Apple gets to a point where it is selling 60% or more of all digital subscriptions through its App Store, “then you might move into territory where an antitrust challenge would seem feasible,” says Herbert Hovenkamp, an antitrust professor at the University of Iowa College of Law.