[czr80]

You're right, the marginal cost argument is wrong, and yet there is something different going on here and I think I know what it is: The fundamental change here is that customers own the means of reproducing the product and reproduction costs are equal to the marginal cost. How much could Apple sell an iPhone for if the same was true? What would Apple do to remain in business?

[msellout]

I think that's worth repeating: "the ownership of the means of production has changed". Intentionally rephrased to allude to a certain economist.