Thought this was pretty interesting.
RIAA: Pirates Are Bigger Music Fans Than Average Consumers | TorrentFreak
So the pirates position is correlation that doesnt show causation, but is plausible, and the RIAAs position is 'people that like music consume more music', without being able to show any connection between liking music and therefore downloading it for free, which is rather counterintuitive.
Great. Everyones wrong.