For most of its early history, the #video_game industry sold two simple things: a machine and a piece of plastic. A family bought a console, then bought cartridges or discs to play on it. The relationship between the company and the player often ended at the cash register. Once the box was opened, the sale was complete, and the next sale would only happen when a new game appeared on a shelf. This was a clear and honest model, but it was also limited. Revenue arrived in sharp