If you're here to whine about how big chain stores (cough GameStop cough) are evil, please leave now.
Okay, now that's out of the way, a little story time. I was watching my friend play one of the new Pokemon games on the DS a few weeks ago, and he said that he was playing a pirated copy on a flash cart. So I asked him, "Why play a pirated copy? It hurts the company that made the product, as well as the people who worked on it." He said 1. Pokemon is a big franchise that Nintendo makes lots of money off of, and that his one pirated copy wasn't going to hurt them, and 2. used games don't support the company nor the workers that made them either, yet they are legal.
It was easy for me to dispel #1 (I didn't say it to him though, I was too taken aback by #2), because it is basic stuff about IP law. What if everyone who bought one of the Pokemon DS games downloaded a pirated copy instead? You see, buying a product is like casting a vote: it shows your support for that product and the company that made it. While he might not have too much of an impact over Nintendo's financial future, his downloading of a pirated copy does set a bad precedent. And when more people begin to pirate because of his example, Nintendo's profit could be hurt, eventually resulting in them going out of business or not having enough money to develop as many new titles. A lose/lose situation, as eventually there will be nothing left to pirate.
Now to #2, where this topic gets its name from. Sure, buying a used game does not directly support the companies that developed/published it. However, one of the factors that affects how much these companies make is shelf space. Used game sales have high profit margins, so they make lots of money for the store and (very likely) the franchise. The more money a franchise has, the more stores they can license, and more stores = more shelf space. Shelf space translates to more sales for the publisher and developer, which translates to more and better-developed products. Do you think Nintendo could risk delaying so many of their products if they didn't have the money to support their dev teams?
Okay, now that you've heard my view: discuss!