Bob Edwards had a very interesting hour on his weekend program for April 24-35, devoted to the future of publishing. His first guest, Richard Nash, made the perceptive observation that, unlike the open, MP3 standard for music, book publishing is still a long way from settling on a common distribution platform.
Musicians can retrench themselves as live performers, rather than studio artists, about which there is a fascinating article in today's NYT. Novelists do not have that option. They must be compensated for their texts, and I think that a proprietary format for copyrighted works will be unavoidable. IMO Adobe is well-positioned with its PDF format, but Apple has set it's face against Adobe., with the new iPad being incompatible with Adobe's Flash. Time will tell.