Piracy would go down if a 6h experience didnt cost $60. Im looking at you Bioshock!
Most can agree that Bioshock is a great game and a game that you shouldnt miss out on. Its a GOTY and highly popular. But its a 4year development, $60 game that offers 6hrs of gametime, with little replay value. Worth it? Hell the fuck no. So people download it.
Piracy is all about money and easy access.