RTFM
ALL of the digital download content suppliers have nasty little clauses that say in many words that the license you buy from them is somewhat ethereal. Amazon has had battles with publishing companies over licensing that has lead to titles magically vanishing from Kindles. Disney blacked out their movies one holiday season to force people who had already "purchased" the titles to tune into the Disney Channel and watch commercials.
Any content you buy that isn't on physical media or backed up (if not DRM'd to death) is subject to revocation.
Go ahead, "subscribe" to all of your entertainment and programs and see what happens, I dare ya.
Biting the hand that feeds IT
