Assuming I understand one of your fundamental question correctly, I offer a piece of advice. Pirates are going to pirate, no matter what you do. Our estimate for our Android app Calibre Companion is that around 40% of our users are knowingly running pirated software. There are automated tools to help the "dedicated software liberators" do their dastardly deed. There are many sites dedicated to distributed this "liberated" software. And so on.
Ebooks suffer from the same problem as apps (if not worse), and in the end there is squat you can do about it. The only thing I have found that can help is building a relationship with your "users" (readers) in hopes that people will see the benefit in supporting you, but even that doesn't help in most cases. Almost none of the lowlifes that pirate stuff will support you, end of discussion.
Of course, sometimes one finds the opposite, people who support you beyond reasonable expectation. What an amazing thing this is.
