No surprise here - the 3 companies (Pearson, Cengage, and Macmillan) are the furthest behind the tech adoption curve of their big competitors & parent companies.

And the real threat is from iBooks, but they won't dare go after Apple.

If you can't innovate, litigate and legislate.

EDIT: here's a link to book mentioned in article - http://www.amazon.com/Campbell-Biology-MasteringBiology-9th-...