Unfortunately it's a bit wordy, so I think I'll highlight the most readable part. Tyler cites this 2011 story on pornography:
According to some in the industry, free porn is actually driving up profits since it has expanded the consumer base for paid porn. Feras Antoon, CEO of Brazzers (owned by Manwin), told New York Magazine that free porn sites have "vastly enlarged the total universe of porn consumers that the number of those who pay has ballooned along with it." As an example, in one year Manwin's pre-tax earnings increased more than 40%.
I really don't have much to add to this, but it's definitely good to know.