You state that Audible has an exclusive ebook contract with Apple iTunes and that they (Audible) are the ones who refuse to allow authors to sell DRM-free ebooks through their network. You then go on to bash Apple for failing to allow DRM-free ebooks on iTunes. Seems to me like Apple is just abiding by the contract they already have with Audible. I am sure Apple would be willing to sell DRM-free ebooks or video (just as they have with music) at the point that it would not violate their contract.

It just makes you sound like a bitter person with an ax to grind to blame Apple for Audible's shortcomings. Judge Apple on their actions when the Audible contract comes up for renewal. I bet they use their market leverage to remove the exclusivity clause and allow a DRM-free ebook vendor to pressure Audible.