E-book piracy has been going on for a long time. 12-15 years ago it was mostly on Usenet groups. Those might still exist, but much of it is now occurring at the same websites and torrent aggregators where music, movies, TV shows, and software are pirated. The very small size of an e-book file has always made this very easy. A compressed 500 page book might be .3-.5MB, while a typical MP3 is 3-5MB, and a full length movie is 800MB or more. As mentioned several times, the problem with pirating paper books to e-books is in the conversion, but once it’s converted, that copy spreads very easily.
The big thing that has changed recently is that viewers for e-books have gone mainstream. 10 years ago e-books could be viewed on a PDA (such as a Palm Pilot or Windows CE device), a general purpose computer, or printed. Today there are many devices to view e-books on, such as smart phones, “dumb” phones (anything that can run JavaME), MP3 players, tablets, and purpose built e-book readers.
My opinion is that mainstream use of e-books will both increase the amount of piracy that goes on, and increase the amount of money authors and publishers earn from e-books. Just like many people are happy to buy music from iTunes or Amazon, even though the same music is available “free.” A generally available method of cracking Kindle, etc. files for unencumbered distribution will probably also increase the amount of piracy.
This is probably entering GD territory, but it seems to me that publishers are attempting to make e-books the new hard covers. Things like the $10 price point, and how that $10 is divided between author, publisher, and distributor is more typical of hard back books than paperbacks. For now the attempt seems to be to sell “hardbacks” forever. E-books are $10, and they’ll always be $10. As opposed to real hardbacks, which might be $25, and then six months to a year later the paperback comes out for $8. Perhaps eventually publishers will start e-books at a high price, and then when the paperback comes out, drop the e-book price to $3 or so. For now they seem to want to get rid of that model completely.
Finally, an anecdote. At the publishing of one of the Harry Potter books (whichever came out in 2004 or so) JK Rowling made the comment that the Harry Potter books would never be available as e-books, because that made piracy too easy. First, that means anybody who wanted an e-book of Harry Potter only had the option of pirating, so they couldn’t give her money for it, even if they wanted to (of course they could buy the book despite pirating it). Second, the lack of an official e-book version did nothing to prevent the creation of pirate e-book versions. I went to the midnight release of one of the books, and a proofread pirate version was available by the time I got home from the release party. Of course I’m at GMT+7, so I probably could have had the pirate version before I went to the party. This version was not due to early leaks, but from many people who bought it, and each put up a few pages of proofread text, which was then assembled into the full book.