Maybe someday these people who say "Oh it's okay with me, because I want the developers to make money" will start to learn that it doesn't work that way. This isn't about Gamestop. Fuck Gamestop. This is about being able to sell or trade your games to another human being. If it is restricted - Fuck. That. Shit.
I swear, people act like Gamestop forces people to trade in at their store, and their store only. People sell their games to each other on Ebay and Amazon every day. If you think EA, Activision, or Microsoft deserve a cut of that, you have been fooled.
You don't have to buy used games to see the reality in that.