This is true. My point was more about how publishers should value print as opposed to ebooks. The value of a print sale is diminished to some extent by it's fueling of the used market. So whatever a publisher values a print sale should be discounted to some degree. The same is not true for ebooks. An additional sale of an ebook does not discount the general price of ebooks.
Right. If I want to steal 5,400 different physical books, I'm going to need a truck and some criminal intent and probably a half dozen or more bookstores to get them all from. eBooks, on the other hand....