Andrew mentioned Apple's reach and clout in the education arena and that's almost true. But I see a gaping hole in Apple's ebooks strategy. iBooks is 200 miles south of the industry standard for ebooks (AFAIK it's .epub, right?). That in itself is not a bad thing because not all standards exhibit the best implementation of available resources. However, that proprietary standard is a massive pain in the ass for publishers - big and small alike - as they'll be forced to create two electronic versions of same title, one for Apple's iBooks and the other one for the rest of the world. That doesn't sound like a good industry model to me.