Okay... How is Gamestop selling a used game any different than any other video game store reselling a used game? Or a person giving their used game to a friend who wants to play it? Or someone selling their used games on Craigslist?

Publishers of books make no money from used bookstores, record companies make no money from people selling old CDs. This happens in every media in existence.

I agree with you on the pirating issue, but freaking out about used games is ridiculous.