I've been working with an author-run e-publishing group for the past few months, and this is an attitude I see a lot. I understand where it comes from, but it's not really good for readers or the literary ecosystem. Amazon has no real stake in any of the books they publish. They own the platform that sells all of the content, so as long as they're selling something, they're fine. There are no publishers giving books the criticism and support they need, and no passionate booksellers to promote them to readers. If even the authors don't care if a book sells, where does that leave us? I don't know. But I'm going to keep buying traditionally published books until someone figures it out.