In the name of Digital Rights Management, corporations prevent you from editing or saving stuff they have published to you. This is odd, and at at odds with the spirit of Copyright.
No-one can tell you how much of their book to read, or the order you can read it in. Why do they presume to do so with sound or video? Why must I look at a green FBI notice for 15 seconds at the start of a DVD?

It is the act of re-publishing where the potential copyright violation occurs, not the act of viewing or editing.

Reject uneditable content and say why. Rights are for people, not digits or management.