Respecting licenses is all well and good, but I was never completely clear on why the full text of the book was not published on the web to begin with, since it seems clear that the bulk of the authors' revenue is probably coming from YC, and anyway the publisher frequently keeps most of the revenue from book sales.
There's something kind of frustrating shelling out a bunch of money to read about people who already have a bunch of it, written by someone who has a bunch of it... sigh. Hope it's worth it.
(BTW, I expect other people to respect the licenses on the things I create, so I certainly wouldn't violate others' licenses, but still, sometimes it's a frustrating feeling).