Imagine schools who had to pay yearly fees to use books

I feel like we aren't far from that. Wouldn't be surprised if new books get published (in whatever medium) that are licensed out instead of sold.

You just reminded me that it is a thing, or at least was a thing. Around the time that I was leaving the university world publishers were were starting to introduce time limited ebooks. This not only affected the second hand book market, but students who would have their books in the past.