@OP:
I can't agree with you.
Used games by themselves are beneficial to the gaming industry, as they contribute to fund new purchases of the more intense gamers.
OTOH, what's harmful is GameStop used games business model, because it uses them to unfairly compete with the new games market and at the same times its huge margin on used games reduce funds available to those intense gamers needing to sell older games to buy new ones.
What GS does isn't illegal, it uses both users' laziness and lack of time and its widespread presence to make them a less convenient offer in return for some time and effort spared compared to other used games channels, but despite being legal, it's nevertheless quite harmful.
But if something must be done, it shouldn't ever damage end-users, that are innocent of this, but just GS (and other companies behaving like it), maybe with rules about commercial exploitment of the used market by subjects different from the consumer.
