The gaming industry doesn't care if YOU sell or trade in your used game. That's First Doctrine and that is correct. Yard sale, eBay, Craig's list, it's yours, do with it what you want. But Gamestop isn't just selling it's used games, it's making money as a middleman and that is what bothers the industry, their entire business model is making tons of money off of selling used games FOR A PROFIT. When you sell your used game, you are almost always selling it for less than you paid for it, but when Gamestop sells a game they are selling it for more than they paid for it. That's the problem. Gamestop is MAKING money, not losing money like you and I do when we sell a used game. The industry feels Gamestop is getting rich off of their hard work. Which they are. So they have a point.