Apple announced that it has decided to change the rules for publishers. No surprise that this comes without an apology. Previously, the company allowed application developers to sell content over a web browser, not through the app itself. Now, Apple decides it wants a cut after all, and beginning later this year, it will traffic these sales itself—and charge a 30% toll. The Times quotes an electronics analyst who says, “Apple started making money with devices. Maybe the new thing that everyone recognizes is the unit of economic value is the platform, not the device.” But there are deeper implications for magazines and newspapers that go to the heart of the business model—retaining control over subscriptions and, crucially, subscriber data.