Out of those 650,000 how many would pirate it instead of buy? Maybe in their mind they didn't think it was worth the trouble due to piracy or such. Don't get me wrong, I love PC gaming but you can't deny that piracy exists, and yes it does on console platforms too I am aware. But I myself have been in thread discussions on other forums where PC gamers openly admit to pirating PC games and have no shame in it. That is the problem. When you do that you are providing developers like Rockstar with a scapegoat, justified or not, for them to be able to say they won't release on PC.