I already explained how they ARE the problem here. They make more money off of used sales than sales of new games, which is NOT how it should be, and because of that, they put more effort into moving used goods, even if a game launched just a few days prior. This takes a huge chunk out of the sales of new copies that should be taking place. This is why developers are complaining. They're not losing money because a Goodwill is selling a copy of their game months or years later. It's all because of GameStop. If they made more money selling new games or if they had some kind of restrictions on how/when they could sell used copies (at the very least, not trying to convince customers to go with a used copy over a new one three days after launch just to save 5 bucks), we wouldn't see developers/publishers so concerned about used games.