One of the best quotes, also quoted in the summary:
Print textbooks are still healthy, but they function now as a reference for professors and students, while these other materials are taking center stage in the learning experience.That the core function for textbooks is recognized as changing should be of concern to anyone whose core business is selling that product. It signals that the time is right to be moving toward models and capabilities that enable selling the "replacement product." Cengage has been very innovative in the past couple years, as have some of the other educational publishers, in experimenting and testing out different approaches to what the future of digital course materials might really look like.