[jiggy2011]

Under this model , the license itself is effectively a commodity since they are interchangeable. So you can think about the economics as such.

Say a new movie is released. Now, how many people want to watch this movie? Let's say 1,000,000. How many people want to watch it at exactly the same time at peak? Maybe only 10,000.

So once 10,001 copies have been sold there is now a surplus of movie licenses. This means that A) The price to buy a license will drop and B) You will always be able to buy a license if you want one and C) There is no reason to buy a "new" license.

Under that model it makes sense to always sell something that you are not using for longer than the period it takes for the transaction to complete (which would probably only be seconds). Pause the movie to go to the bathroom; Sell. Sit back down; Buy.