Originally Posted by Olympus
Advanced piracy is not prevented but I accept that as a fact of life.
One of the other facts about advanced piracy is that advanced pirates very frequently give away their tools making it easy for people who aren't even very technical to decrypt protected content. These tools are typically not hard to find.
Another issue is that it only takes one person to put a book up on a file sharing site and thousands of people can download it for free. While the average person may not strip the DRM off their files and put them online, the question for the publishers is more whether the average person, or enough people, will download a book rather than pay for it if it's easy enough and they're unlikely to get caught. You don't need thousands of individuals to strip the DRM off their books. You just need one.
So while it's great that a DRM like this wouldn't be onerous to all the honest people that paid for their content, it wouldn't really stop illegal file sharing. It probably wouldn't even be much of a speed bump which just makes it an added expense with no real benefit. The current restrictive DRM systems don't, either. In my personal opinion, the best chances we have are with either enforcement efforts against uploaders or coming up with alternative ways for people to be compensated.