I understand the web provides a distinction in that dissemination is a lot easier. But suppose only one person downloaded your book from Megauploads. After she's done reading it, she deletes it.
How is she different from someone who simply borrowed your book from a library or friend and then returned it after she was done? In either case, she does not buy your book, so the impact to you is the same. In either case, her motive is to read the book once without having to pay you.
We revere libraries in our culture, and yet in my example, the library is in a position to facilitate hundreds of transactions (borrowing, with no royalty paid to you) that may operate to deprive of many dozens, if not hundreds of sales. As noted above, the web makes many thousands, or millions or transactions possible, I understand that, of course. But do you also think libraries are a problem for authors as well, just to a lesser degree?
The NYT article does make a good point that intellectual property is different in nature than physical property, and thus the discussion might need to be different either. That's not saying authors are entitled to no protection for their work. It's just saying it's a different sort of conversation.
I have some idea what responses might be, but I am more interested in your response than mine.