Just a small point on the first comment (and I wish I could find the article to refer to, but the internet is a giant void that buries things faster than a mudslide). There was a case where a game developer sued, and I believe won, against a homeowner who was selling one of their games at a garage sale because, even though they had the physical media, the EULA explicitly revoked transferral of possession and was, in fact, just a license, not ownership. I remember it vividly because it was the first time I had ever heard of someone claiming that someone did not own a physical object that they purchased in a store. Afterward, I discussed it with some of the used game retailers and found out that there were some games that they were specifically prohibited from accepting as trades for this very reason.