You are right. In that way, "e-books" allow you to bundle up a web page in a supportable, standardized format that is easy to sell in bulk. The main reason I k

You are right. In that way, "e-books" allow you to bundle up a web page in a supportable, standardized format that is easy to sell in bulk. The main reason I know of that teachers use text books is for assignments and pre-built tests. That's where text book companies make some money.