You're not doing yourself a favor. All you're doing is hurting yourself in the long-run. Not to mention that software piracy and music piracy is ILLEGAL and you can literally get sent to jail and be forced to pay a hefty fine for it.
By pirating software and music you're contributing to the price hikes developers are implementing because of pirates. They need to make money from legitimate customers, and once the prices get to a certain point the legitimate customers aren't going to be able to keep affording them. When this happens, game developers will stop making new games since they can't afford to do it.
You are literally killing game development by pirating games and music. You say "what can one person downloading a game do to the industry?", well the answer is simple. There isn't just one person downloading software and music illegally, the percentage of people doing it is growing all the time. This is because it's only getting easier to pirate software and games, and kids that can't otherwise afford things start pirating.
I've reported a couple of your posts in this thread and forwarded your information and a PM to Sawnose. Hopefully you will be IP banned from Halo 1 and 2 PC, and permanently banned from Xbox Live for piracy.
Enjoy!