I am worried about one particular fact : these so called disruptive firms don't want to conform e-books to a standard format. Paper has this huge advantage. One can read old literature because they "conform" to one format. In the e-book space, everyone has their own. While Apple did disrupt the music industry, I don't necessarily feel they have set the fire in terms of e-books. They may get the numbers (they do more often than not) but they may not get the innovation.