Off topic but, why would anyone want to buy audiobooks via their local bookstore? I haven't seen this anywhere else: when is it something desirable to ADD a middleman rather than removing them?
It's not that anyone wants to buy books at a local bookstore, but that people don't want to be forced to buy things from just one place. The core issue here is that exclusivity further strengthens monopoly, and that, I think, is the fundamental gripe.