Right. I guess the defining feature of the private copying regime is that copying is inherently private. We can never know. We can't control it. We can't directly license these copies. That's really the problem that is solved by the levy regime.
Again, we're trying to come as close as we can to having the users pay, but this is precisely the category of copying that we can't know about that is private. We have to use data and logic to compensate as closely as we can without having a direct relationship with those users.