The author missed the definition of "Work" until after they published the article. "Work" is clearly defined in the EULA as the output of the Apple software.
The Apple software in question is the last encoding step in a workflow to publish iBooks. If you aren't publishing an iBook, use a different tool for that last step.
Bingo. You own the content you give Author, Apple gets exclusive distribution rights to the output of the software they provide free for the sole purpose of creating proprietary files for Apple's distribution service. There is nothing in the agreement claiming exclusivity to the content you put INTO the software, only what comes out of it.
The author missed the definition of "Work" until after they published the article. "Work" is clearly defined in the EULA as the output of the Apple software.
The Apple software in question is the last encoding step in a workflow to publish iBooks. If you aren't publishing an iBook, use a different tool for that last step.