Alright, here's the thing… If someone downloads an e-book, what is preventing them from just uploading it and sharing it online? There is probably a software that lets you put your ebooks onto your computer, right?
Also, another question that's not really related, if you have an e-reader are you limited to that book store of can you buy e-books from other places? Ex. If I bought an e-book from kindle store could I transfer it over to a nook from barnes & nobles?
Read more: What prevents people from giving away ebooks?