An erotic romance author turned down an Amazon publishing deal. Aubrey Rose, a successfully self-published writer, said that the offer from online giant was far less than she could make on her own. http://www.theguardian.com/books/2013/aug/08/amazon-publishing-deal-turned-down-author
From my limited dealings so far with Amazon, I know what she means. After publishing on Smashwords, which felt like doing business with a friendly neighbourhood corner shop, putting my books onto Amazon had all of the charm of swimming in a pool full of sharks, while covered in bacon!
Corporations don’t become huge by being nice.