The opening statements by the Department of Justice and Apple at the start of the trial between the two over e-book pricing have been given, with the DOJ claiming that Apple facilitated agreements with the big four publishers (five at the time; Hatchette and Penguin later merged) to present a unified front that demanded the "agency model" of pricing (where publishers set the e-book prices) in order to break Amazon of its predatory pricing habit of pricing e-books below its own cost -- which was having a deleterious effect on both e-book competitors and physical book sales.
