....or is it now just being done via means other than bit torrent?
http://www.bbc.com/news/technology-18953353
For example...how many people now share files directly - on USB sticks and company LANs - or use various tools to strip MP3 audio out of streaming music video?
...or any of a number of other methods..... any of which fall outside the scope of what this story purports to have measured.