The first press accounts of the Apple iPad have been long on emotional raves about its beauty and ease of use, but have glossed over its competitive characteristics—or rather, its lack thereof. Some have characterized the iPad as an evolution from flexible-but-complicated computers to simple, elegant appliances. But has there ever been an “appliance” with the kind of competitive control Apple now enjoys over the iPad? The iPad's DRM restrictions mean that Apple has absolute dominion over who can run code on the device—and while that thin shellac of DRM will prove useless at things that matter to publishers, like preventing piracy, it is deadly effective in what matters to Apple: preventing competition.
Cory Doctorow at Publishers Weekly