It depends on what you consider a player, in my opinion. I admit that 95% of the users who open a PC game may not be playing a copy they purchased, but in all

It depends on what you consider a player, in my opinion. I admit that 95% of the users who open a PC game may not be playing a copy they purchased, but in all likelihood most play it for about 5 minutes. Just as with pirated iPhone apps, where it often seems people install 400 apps and never open them twice.