Another piracy article

[Arclight]

But worth the read:

Another View Of Video Game Piracy

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Let's consider the following scenario. Because game pirates can get apps for free, they download a couple new games every day — or about 500 games in a year. On the other hand, normal gamers tend to play the same game for a longer time — buying an average of 5 games per year. If this seems low to you, then consider that you are also reading a post on an indie game developer blog. You are probably more hardcore than the average gamer. Anyway, given these statistics, if the market consists of 10 million gamers, then there are 500 million pirated game copies, and 90 million purchased game copies, From the perspective of every individual game, 80% of its users are using pirated copies. However, only 10% of the market consists of pirates.

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Just skip to the last topic for the short answer, in a tl;dr scenario.