Why does nobody offer pre-encoded DVD content?

I know that some content providers do but what about those webmasters who have already had DVD content encoded based on content they have already purchased?

It would make life so much easier for a lot of people if someone who already owned a lot of DVD content would offer up their already encoded content to others at a cost, so long as the 'client' could prove they own the rights to use the DVD content.

There must be 1000's of DVD titles around that have already been encoded by 1000's of adult webmasters, you would have thought that someone would be offering pre-encoded content already.

Buy some DVD content from somewhere like WWC, then go to someone else who has already encoded it and save time on encoding by just using the stuff they already have.

Regards,

Lee