Just in. News from Publishers Weekly. Amazon.com, the Earth’s largest bookstore, has just gotten a little smaller. Starting today all new titles from Penguin Books will not be available on Kindle editons from Amazon. They will be available from other e-book distributors. Since Amazon currently sells 90% of all e-books, this is not good news for Penguin authors and will put additional pressure on other publishers do it the Amazon way or no way.