If we want to know what terms Apple would apply to ebook readers and sell books under, we don't need to reason by analogy from the restrictions on smartphone ap

If we want to know what terms Apple would apply to ebook readers and sell books under, we don't need to reason by analogy from the restrictions on smartphone app loading and the terms they use to sell apps for smartphones. They already sell ebooks and make ebook readers, which allow sideloading.