Bio not provided
Considering they choose whether or not you're allowed to charge anything, I'd consider that some sort of 'ownership'. If Apple doesn't like the content, they say, "Sorry you cannot distribute it for money", Sure you can give it away, but that defeats the purpose for a lot of authors. Specifically referring to section: "(ii) if your Work is provided for a fee (including as part of any subscription-based product orservice), you may only distribute the Work through Apple and such distribution is subject to the following limitations and conditions: (a) you will be required to enter into a separate written agreement with Apple (or an Apple affiliate or subsidiary) before any commercial distribution of your Work may take place; and (b) Apple may determine for any reason and in its sole discretion not to select your Work for distribution."
2 years, 6 months ago on Apple's iBooks Author EULA: What's the Big Deal?