Drm
Now you see what DRM is good for. Online rentals couldn't exist without it. When used properly, it can actually give us more choice.
The Netflix business model works because the time delay for mailing out and returning movies puts a practical limitation on how many you can get in a month. That doesn't seem to translate to downloads.
How would you have four downloads "out" at a time? If you can "return" a movie as soon as you finish it and immediately download another one, you don't have any certain number of movies "out" at a time.
Now you see what DRM is good for. Online rentals couldn't exist without it. When used properly, it can actually give us more choice.