Originally Posted by JD Gumby
No, they haven't. Most just don't realize that they're not actually buying the book (same goes for software).
There's nothing unique about books in that - it's the same with all digital purchases: books, software, music, etc. It's even the same with pbooks if you stop and think about it; you're buying the paper and ink and glue, but not the "ownership" of the book's contents. You're merely being granted a rather restricted set of rights to the contents (eg you can't hold a public reading of the book and charge people to hear it.)