Imagine if you instead could loan/lease the books to your e-reader for the duration of the course and only pay for the relevant pages. You could make digital notes and share with your classmates and ask questions to your teachers. By syncing the device you would always have the latest course schedule and material. Some of this is doable without an e-reader, but there always be a disconnect between the analog and digital information.
This might already exist or never be practically feasible. But when people claim that 'people always prefer physical books', I don't agree. At least not when it comes to course literature.
On a side note, anyone seeing Google selling OCR'ed books as e-books with an android based e-reader? :)