I just meant that in the process of producing a DVD, all the material would have to have been digitized. I'm sure for some releases the production companies have gone bankrupt and/or the files are lost -- but I'd think that once digitized the masters would be kept around?
You'd like to think so, but for the most part, the digitization and prep work is done by post houses or specialist digital distribution services, and the intermediates, which cost money to preserve, are almost always discarded.
