I make literally five times as much money in royalties per $24 hardcover as I do per $8 paperback. I'd like to be able to make that money off $10 ebooks via Ama

I make literally five times as much money in royalties per $24 hardcover as I do per $8 paperback. I'd like to be able to make that money off $10 ebooks via Amazon, but my publishers (and their contracts departments) aren't set up that way; we're locked in place with legal boilerplate written years ago. Ah, there's the rub. The author's current model, as negotiated by the publisher, has them cutting into margins for ebooks. Is that amazon's problem? I would think that if the author redefined the model through renegotiation or cutting out the publisher altogether, the attitude would change.