In the past few years several studies on the impact of P2P music file sharing on recorded music sales were published. They came to very different and even conflicting results, as I highlighted in a 25 part blog series. A recently published study now shifts the focus from file sharing to music video online streaming. R. Scott Hiller of Fairfield University and Jin-Hyuk Kim of University of Colorado Boulder analysed the sales displacement effect of YouTube in a paper entitled “Online Music, Sales Displacement, and Internet Search: Evidence from YouTube“. They concluded that Warner Music Group sold significantly more units of its Billboard 200 albums, when the Warner content was removed from YouTube due to a conflict on licensing fees. In addition, they found no evidence that the blackout had a negative promotional effect for Warner artists.
You can read more about this study and my assessment of the results here: