Another iBooks Author license perspective
In fact, that EULA language is merely stupid not evil. Apple is not asserting any sort of control over the contents of your book, just the formatted output of iBooks Author. That output can only be used to create an iBook and iBooks can only be sold through iTunes, so the language doesn’t actually create any restriction that isn’t already inherent in the software. Besides, no one has to use iTunes Author; there are other tools for creating iBooks.