Sure, I was focusing on the blackmail subset of extortion, because (a) this posting was discussing their releasing of information and (b) they can't actually us

Sure, I was focusing on the blackmail subset of extortion, because (a) this posting was discussing their releasing of information and (b) they can't actually use any force or threats of force. Helping their users decline to provide tracking information on unless they and their users get a cut is also not extortion, because the website owners don't have a right to that information. You seem to believe that owners of websites have a natural right to their chosen business model, even if others don't wish to help enable that business model.