It would also be interesting to see the impact of distribution platforms and media formats - one would imagine that more fragmented markets (e.g. HBO exclusive

It would also be interesting to see the impact of distribution platforms and media formats - one would imagine that more fragmented markets (e.g. HBO exclusive shows) have higher incidents of piracy, as consumers can then find all their interests in one centralized location, rather than a dozen different subscription services. DRM also presumably provides some increase - while it's (thankfully) dead for music, it seems alive and well for TV.