Japanese econometrics study: Filesharing boosts DVD sales

http://www.rieti.go.jp/en/publications/summary/11010021.html

"Whether or not illegal copies circulating on the internet reduce the sales of legal products has been a hot issue in the entertainment industries. Though much empirical research has been conducted on the music industry, research on the movie industry has been very limited. This paper examines the effects of the movie sharing site Youtube and file sharing program Winny on DVD sales and rentals of Japanese TV animation programs. Estimated equations of 105 anime episodes show that (1) Youtube viewing does not negatively affect DVD rentals, and it appears to help raise DVD sales; and (2) although Winny file sharing negatively affects DVD rentals, it does not affect DVD sales. Youtube’s effect of boosting DVD sales can be seen after the TV’s broadcasting of the series has concluded, which suggests that not just a few people learned about the program via a Youtube viewing. In other words YouTube can be interpreted as a promotion tool for DVD sales."

I wish there were an English translation, now that I've spent all this time learning econometrics....