Yes, Amazon is "the real predator" here. Not the folks who charge the same for providing electronic bits as they do for purchasing, printing, inventorying, and distributing the physical product.
That statement clearly shows who you are representing in this argument. The publishers are overcharging for electronic versions of their IP. They jumped at the chance offered by Apple, to justify this rape of the consumer. While you would be correct to point out that Amazon does nothing from altruistic motive, that's irrelevant. In this case, they felt they would profit from a situation where there was unfettered (or less fettered) competition, possibly even *gasp* between publishers themselves!. Apple, also not acting altruistically, just jumped on the opposing position, which the publishers (rightly) saw as the best opportunity for the continuation of these windfall profits.
"But wait!" (you will say) "You can't expect the publishers to act against their own interests, can you?" Well, no. But if eBooks went away entirely, or at least proved to be an insignificant part of the publishing industry, I think they'd be pretty happy about it. Their own actions speak to this, as they would rather discourage the purchase of eBooks (by insisting on profit in the mega-multiples compared to production cost) than compete against their own based-on-paper business model.
The disruptive technology of eBooks is causing these various actors to behave in non-intuitive ways, which gives YOU the opportunity to put forth FUD, confusing arguments, and false dilemas on behalf of (apparently) the publishers.
The publishers will learn. Eventually, many millions of lobbying $$ down the road, there will be legislation protecting the practice of charging $10.00 for something that costs them $1.50 to provide, since it costs them $x+$1.50 to produce the paper version. But until then, if it walks like collusion, and quacks like collusion and results in higher prices than necessary or justifiable to consumers, some parts of the government will actually perform their jobs and try to prevent it.