[danaris]

This has, AFAIK, been ruled not to be the case. You have the right to back up DVDs you legally bought for precisely this reason.

[robertlagrant]

Well, that might depend on where you live. But point being that if your backups also break, you don't have the right to watch the thing any more.

[Kwpolska]

It is possible for your disk and backups to break, or to be stolen, etc. But it’s just an unfortunate thing that can happen to anything you own. It’s different from the corporation taking away the rights of millions of people just because a licence ran out.

[robertlagrant]

That is different. I was making the point that with physical media you don't have an unlimited right to watch forever either.