They disallow Amazon from linking to their ebook store from within the app. > Only if you buy those songs through Walmart. With Walmart disallowing songs to b

They disallow Amazon from linking to their ebook store from within the app. > Only if you buy those songs through Walmart. With Walmart disallowing songs to be bought from anywhere other than Walmart. That's why the analogy (which has been repeated over and over) is rather silly. When you purchase something from a retailer you establish 2 relationships; one with the retailer and one with the product you purchased. In the App Store universe, Apple places itself in between the second relationship. Whether this is legal or not I will leave to those with relevant degrees.