OS's can be changed. DVD formats can't.
You seem to be all for open source, and all thing GNU & 'nix (which I applaud), but you seem to have totally opposite views on HD-optical formats. One disc to rule them all? It certainly makes things easier. Every title runs on every player. Sounds like Bill Gates' dream.
I'm just trying to understand why the liberating anarchy of open source is good for operating systems & such, but undesirable in disc formats?
I for one welcome China's new Patent-Free Disc format (they should call it the PFDVD). Although I'll bet NTP has a patent tucked away somewhere on optical discs, or the geometric shape "round", or discs with a center hole or something of the sort.