I mean, they also think that the text needs to be verbatim in order to qualify as infringement (although, it does make it significantly easier to prove!), so, they're operating from an absurd level of naivete on the subject.
Like, if I CTRL+H'd a book and changed ' and ' to ' & ' do they think I can all of a sudden (commercially, no less!) re-distribute a book all I want? Just to be on the safe side, maybe I should remove every 'e' since that's bound to change almost every sentence in most books but won't make it all that much harder to read!
More importantly though ... plenty of people purchased material that they then put on Napster back in the day and they weren't magically granted immunity because they legally acquired the material that they then distributed illegally and that wasn't even for commercial gain! Once you add people making money into the equation, it becomes even worse.