I believe professors at my university may already be infringing on this patent. I was required to buy a $90 "workbook" authored by the course professor to access a "course survey" worth 10% of the final grade. Granted, you could share the book and access to the material online, but not if you wanted an A.
Wow $90 workbook? The workbooks made by my course professors cost only $10-20 from the university photocopy shop - which is half as expensive as doing the photocopying yourself. When they're available it comes with homework, lecture notes, etc. It also isn't counted towards the grade...
When they're not available, because the lecturer did not author a workbook, we'd have to buy a $150-$250 textbook. I really hate it when the lecturer of Finance 1 and the lecturer of Finance 2 use different textbooks, even though one of the textbooks already have content of both of the courses. Luckily our library has a section full of textbooks with daily usage time limit of 2 hours. That means they're usually available when I go in to use one for homework - I don't even need to carry it with me...