@Sean Baggaley 1
I meant the field of DRM content rather than the field of books. And you can check my post history to see that I'm the first to jump to Apple's defence when doing so is justified.
iTunes is no longer needed to activate a device and iCloud acts as a backup solution for on-device content but, for example, if you want music then you still have to use iTunes. Sure, you can subscribe to iTunes Match and cut out the physical connection but there's still no way to put music onto an iPod without iTunes. As far as I'm aware, there's also no way whatsoever to recover music from an iPod onto another device.
Conversely, I can drag and drop over USB un-DRMed books onto my Kindle from the Finder or the Explorer, in both directions. So I was comparing 'how Amazon treat the only media the Kindle supports' to 'how Apple treat the media most associated with the iPod'. I don't think it's an unfair comparison because in both cases it's a question of what the company allows you to do with content that is not otherwise protected.
The Kindle comments are also primarily relevant to the allegation that you can't load content onto a Kindle without third-party software and the attempt to argue an Amazon lockdown. Nevertheless I don't think invoking Apple in a discussion about lockdown is inappropriate.