There are two stories that make sense to me: 1. In order to profit from references to the source text's section+page numbers, they took care to edit, reorder,

There are two stories that make sense to me: 1. In order to profit from references to the source text's section+page numbers, they took care to edit, reorder, and adjust layout so that the identity mapping suffices. This makes me wonder: what compromises did they have to make to achieve this? Why didn't they just provide an easy to use lookup index? 2. They copied the texts, thinking that paraphrasing would protect them. (or laxly supervised contractors/employees who resorted to copying) Both seem plausible to me.