The company owns them. The company can control what you can and cannot do with them, so long as they slap some encryption on there. Mind you, the DVD player can crack CSS (it has to in order to play the DVD), so I have to wonder- are DVD player manufacturers breaking the DMCA?
Myself, I think I'm going to boycott DVDs for awhile. I mean, c'mon people, there's gotta be another format, like VCDs that doesn't suck, right? Something encryption free?
If we refuse to pay them the tribute for a product we can only use in certain circumstances, they'll have to change.