As for Amazon, they might wind up delighted with this thing. Apple’s in the business of selling devices first, content second. I think Amazon is in the content business first, the device business second. A world where Kindle hardware sales pale in comparison to the iPad but where there’s a very popular Kindle app for iPad that competes against iBooks is not a bad situation for Amazon. Apple is only selling e-books for use on their own devices; Amazon is willing to sell e-books anywhere they can.

If Amazon ups their already pretty good iPhone app for iPad (annotation, dictionary, etc) I'll be a very happy customer with a Kindle and an iPad.