We're always looking for interesting examples of companies using infinite goods to sell scarcities, and George Johnston
points us to one side business that Blizzard Entertainment seems to have gotten into to make more money from World of Warcraft. The company already gives out its basic software for free, but sells the (scarce) service of connecting to its game servers to play (even though there are "free" servers out there, many end up paying for the official one, because it's better, more stable, and has many more players). However, Johnston noticed that Blizzard has also done a deal with a 3D printing company (usually used for things like rapid prototyping) to allow game players to buy 3D models of their players
. This is unlikely to ever become a really big business, but it highlights, yet again, that there are numerous different scarcities around any particular product -- and a good business is one that goes out and explores that wide variety of options to figure out what they can sell.