There's also the "try before you buy" argument, where those who pirate typically don't keep what they nab.  If you pirate something that you end up disliking, and would never have bought it without knowing if it's worth it (so, wouldn't have), there's definitely no loss to the publisher.<p>Besides.  As many companies who have dropped DRM have found, many pirates are simply waiting for an unencumbered form of what they want.  If the only legitimate porsche seller is selling half-crushed cars, and there's a perfect-quality one sitting next door with the keys in the ignition and a sign that says "free to a good home", is it even ethical to buy the crap one?  (that said, all "would you steal a porsche" arguments are straw man arguments anyway)