It’s a complicated, always-online world we live in and even young’ens today don’t always understand how it all works. In explaining why renting Fable 2 and buying the Knothole Island DLC was a silly idea to a coworker I came up with this little gem of an analogy:
Renting a game and buying content is like renting a car and buying a stereo for it. It’s only useful when you’ve got that car.
It’s not the perfect example, I realize. You can stick moststereos in any car but you can also get Achievements from DLC that don’t go away when you return the rental. Until the concept of downloadable content is a little more ubiquitous, that’s the best I can do.