Are you one of those people who refuse to open your bag upon leaving a shop? (Presuming this is a policy in your area?)
Sorry I know it's off topic, but is that a common thing? Genuine curiosity, not heard of it before
These aren't just abstract arguments. Without naming names, I know of at least a couple of books that Tor cannot publish as ebooks because the authors' agents, for their own reasons, have not granted us the right to do so.
I think in such a case, it'd be the agents that are idiots. Obviously the publisher can't just ignore the contract. But most consumers won't make such subtle distinctions, they'll just know that either they can buy the book, or they can't (and most of the time will actually blame neither publisher or agent, but retailer).