delta(P1, P2) is nonzero. Hilariously nonzero. If Steve Jobs had a fit of stupid and had given somebody the exclusive for the iPad, that would probably have been worth hundreds of millions of page views. Page views are, of course, exchangable for money. We build entire industries on that fact.
News media outlets are willing to trade things of value for exclusives. For example, PR flacks value embargoes. TechCrunch will give you one if, and only if, you give them an exclusive, despite their professed hatred for them in all other contexts. That should imply to you that TechCrunch is getting something from the exclusive -- and it isn't delta(N).