I think that's only fair if you have paid for the content in a way that is intended to be transient (like a theatre show, concert, etc). But when you pay for content in a way that is intended to be frequently played back (like a CD, book or computer game) then I think there is a fair expectation that content is persistent. This whole shift to "you license content, not own it" is a modern trend that has left many feeling cheated because it gives the illusion of persistence while giving the service providers complete control to remove your access at any time they wish.