I can just tell you that Netflix, for example, knows how many people watch their shows. They know more than that. They know when you get up to go to the bathroom. They know when you hit pause and when you start it again and how fast you went through that series. They have all that information.
I can't speak in such a sure way about YouTube. YouTube is a place where all the kids go to watch videos and listen to music, but you know that it's a company that is making a lot of money from content that's being uploaded and not being protected properly. How do you police it? That's a very good question.