In 2013, a federal judge ruled that apple colluded with five major u. s. publishers to artificially drive up the prices of e-books (which could be read on apple's ipad). apple collects a 30% commission on the price of a book from the publisher. why would apple want to publishers raise their price? given apple's commission, what price would a book cartel want to set? (hint: the marginal cost of an e-book is virtually zero.) apple wants to publishers raise their price because apple's profits are