This article argues E-Books Rewrite Bookselling might make physical books a thing of the past.  I can’t see that the market between books and magazines is that different.  If people move away from physical media I think they will want convergence and all of their content on one device.  I doubt that will be a Kindle simply due to the color that people find attractive.  So is iPad more about challenging Amazon and publishers and trying to duplicate what made iTunes Store/App/iPod a success?