[uiri]

If you're providing electronic resources, then your competition isn't a $200 paper textbook. Your competition is all the free resources available online, including the PDF versions of most textbooks. There is no money to be made in this market except by conning University administrators.

Content on your platform is reliant on charging each student for it, while these free resources can easily be shared by a Prof with the class, between students in the save class, by the student associations (similar to exam databases) or from upper year to lower year students.