It wouldn't be defensible as long as they force them maintain the same price. For some of the companies, 30% of the profit is all they've got, perhaps even more

It wouldn't be defensible as long as they force them maintain the same price. For some of the companies, 30% of the profit is all they've got, perhaps even more than they've got. The biggest problem with this is Apple wouldn't allow them to increase prices. So Amazon wouldn't be able to sell an e-book for $14 to compensate on iOS, and $10 on their own site.