Pirating is not the main reason why PC gaming is dying. Pirating has been around almost as long as games existed.
Pirating is not stealing because nothing is actually lost, although nothing is gained either by the companys; but the reputation of the game may spread more quickly if more people can get their hands on them.
If anyone is wondering what's really killing PC gaming, it's PC's. In order to play the latest computer games, you'll have to become a relatively knowledeable PC hardware enthusiast. That's troublesome in a world where most people have computers, but many have never even touched the control panel other then to set their Final Fantasy backgrounds; the number of "Can I run this?" topics are countless. Not to mention the costs of keeping one's computer resonably up to date. Personally, I love this hobby of ours, but it's not for eveyone. and that's where the game consoles come in which are also pirated if you didn't know.
Pirating doesn't kill industry despite what many want you to believe. An exponentially greater number of people pirate music, but the entertainment industry has been whining ever since the VHS came out.
The fact that the average gamer is actually enraged by pirating is an interesting case however. Are they just jealous they had to pay a substantial fee for something someone else got for free? Or have they just been brain washed by the media and quotes from the higher ups? Not quite sure.