Is illegal downloading prevalent enough to impact the demand for the long tail in music, movies, games and books?

After reading "The Long Tail" by Chris Anderson, my first thought was "Is illegal downloading prevalent enough to impact the demand for the long tail in music, movies, games and books?" Most of the people I know are savvy enough to download any popular entertainment product from the last 10-15 years and if not, they get it from a friend. (Disclaimer: I DO NOT DOWNLOAD ANYTHING!) If this holds true for others outside of my sphere, then potentially, the demand for the long tail has increased significantly because people are reallocating their demand for popular products (because they get it for free) to more obscure products. Why then is there still a demand for popular products? Those are the people who are less computer savvy or more ethical. So is the demand for the long tail of entertainment products really a result of availability or because of the shift in consumer demand due to illegal dl'ing? Thoughts?