So monetizing the middlemen part won't work, but aren't there any number of ways to monetize the reading app part? I, for one, wouldn't mind a flow-based reader. I've bought eBooks from a few places now, but also hate the page-turning interface.
This comes across as a stunt to try to change the agency model for book selling. Good luck on that, though, because now you need to convince both Apple and all the publishers to give them 20% again. But why would they do that? Extra middlemen are not going to offer 20% of value in a digital distribution chain.