Do stop and think, when it comes to the tales that piracy costs the developer money, how? If you were to steal the game by going into gamestop and literally going behind the counter and stealing a version of the game which they burned to dvd or cartridge, packaged, shipped and stocked and you stole, but... if you have the game files and I copy them... how does that cost a company money whereas when I cloned my steam library from one of my PC's to the other this week that didn't? But the rom folders I copied from one PC to the other did cost them money because it's piracy?
They lose money from lack of future income. Somebody getting a copy of something for free is far less likely to pay for it in the future. For example, my brother use to buy movies all the time. Then he got a plex server and started pirating them. Guess how many movies he has purchased since? 0. Those companies have lost his money in their revenue streams because he just pirates everything now. He went from probably spending a couple thousand bucks a year to spending nothing. Piracy obviously has an affect on companies bottom lines, no matter how you want to rationalize it to yourself.