In this analogy 'new cars' (CDs) have already largely been antiquated by the new technology of personal teleportation (audio files distributed over networks.)

The market for new cars still exists because some people don't like teleportation. Some people worry that teleportation recreates you imperfectly on the other side and thus prefer a new car. But that demographic is shrinking. Teleportation is simply so convienent that the overwhelming majority of consumers think the price worth paying.