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Digital PiracyFile Sharing and Music Sales
The Industry View: RIAA
As a result of sound recording piracy:The U.S. economy loses $12.5 billion intotal output annually;The U.S. economy loses 71,060 jobs;
The Industry View: RIAA• The most popular music is also
the most pirated• that is why sales of the top 10
selling albums have declined significantly during the past ten years
The Industry View: RIAA
Only 37% of music acquiredby U.S. consumers in 2009was paid for.
Revenue Streams in Billions of Dollars
What legal forms of music acquisition are missing here?
Contrary Views• Fader argues that • substitutes for recorded music (video games, DVDs, chat rooms) • and a downturn in GDP growth • contributed to sales declines in 2000-2003.
• Stevans and Sessions (2005) suggest that • digital downloads altered the price elasticity of demand for
recorded music such that the demand fell• but after controlling for the price of music, prices of substitutes,
and income, consumption of recorded music actually increased (0.77%) over 2000-2004.
• Zentner (2006) and Oberholzer-Gee and Strumpf (2007) • illegal downloading and file-sharing accounted for a decline of
music sales between zero and 7.8%
Contrary Views
• Klein and Slonaker (2010, 2012 working paper) • After controlling for price of music, prices of substitutes and
complements, income and demographic changes• Music sales contain a positive unobserved component consistent with a
sales decline of 0.5% due to file-sharing and other factors, 2000-2008.
How could file sharing not reduce sales?
• File sharers spend more on music than non-sharers (Torrent Freak, see table below)• P2P file sharing accounts for only 18% of music
consumption• Listening to samples of music online may induce more
consumers to purchase music online as the cost of search declines (Gopal 2006)
How could we model file sharing?• Is the extent of illegal file sharing affected by the price of
music?• Would everyone pirate files if the price of legal music was too
high?• Would some people pirate files regardless of the price of legal
music?• Are there other factors that affect file sharing and piracy?• Modifying the Dominant Firm Model• Opportunities for price discrimination require
• Market Power• Differences in demand between customer groups• Identify and separate these groups• Prevent arbitrage
• Evidence of price discrimination?
References• Oberholzer-Gee, Felix, and Koleman Strumpf. (2007). “The effect of file
sharing on record sales: an empirical analysis.” Journal of Political Economy, 115(1), 1-42.
• Fader, Peter S. Expert report. A&M Records, Inc. v. Napster, Inc., 114 F. Supp. 2d 896.
• Gopal, Ram D., Sudip Battacharjee, and G. Lawrence Sanders. (2006). “Do artists benefit from online music sharing?” Journal of Business, 79(3), 1503-1533.
• Klein, Christopher C. and Shea W. Slonaker. 2010. “Chart turnover and sales in the recorded music industry: 1990-2005.” Review of Industrial Organization, 36: 351-72.
• Stevans, Lonnie K. and David N. Sessions. (2005). “An empirical investigation into the effect of music downloading on the consumer expenditure of recorded music: a time series approach.” Journal of Consumer Policy, 28(3), 311-324.
• Zentner, Andrew (2006). “Measuring the effect of file sharing on music purchases.” The Journal of Law and Economics, 49(1), 63-90.