Downloaded media is associated with an individual drive, so if you cannot produce the keys, then restore operations will fail. There is a lot that would have to happen before that happens, and it may end end up being just one more failed attempt to cut into our freedom. Meanwhile, you should read these two pieces from Charles W. Moore at Applelinks for a great analysis of the possible impact of CPRM and how to stop its use. Do not get me wrong. I do not advocate limitless freedom.
Freedom comes with responsibilities.
We do not just have rights. We also have responsibilities and no right should come without it. To a certain extent, however, we should enjoy a certain level of freedom, including when we use a computer. I believe that freedom of speech and action on the Internet is important, even comparable to political freedom. We should have the right to do what we want, as long as we do not concretely hurt other people's rights.