The good news is that many schools are shifting to having electronic text books
rather than having students carry around heavy books.
Last week for the first time, one of my colleagues decided to buy electronic text books
instead of paper copies.
A DRM'd one-time-use book would not only be attractive because publishers would earn more money, but electronic text books
would be able to be sold for a fraction of the cost, cutting out book stores and creating a landslide marketshare shift by means of that huge price differential.