WSJ.com: "The author of about a dozen books including 'Purple Cow' said he now has so many direct customer relationships, largely via his blog, that he no longer needs a traditional publisher. Mr. Godin plans to release subsequent titles himself in electronic books, via print-on-demand or in such formats as audiobooks, apps, small digital files called PDFs and podcasts. ... It's unclear how many, if any, best-selling authors will follow Mr. Godin's lead. However, his departure from Portfolio, an imprint owned by Pearson PLC's Penguin Group (USA), comes at a critical juncture for the industry. With many new titles spending less time on best-seller lists and in bookstores, publishers are increasingly dependent on brand-name authors such as Mr. Godin to deliver significant book sales."
And of course the brand-name authors are the very ones who are best positioned to fly the coup.