The fallacy of the "Nobody wants the OOT" argument is that, even if that is true, there is no reason why people wouldn't buy that particular Star Wars release anyway. It's based on the assumption that because people don't know or care about the OOT, they won't purchase a re-release of Star Wars because the OOT is included. Including the OOT can only help sales because it provides for an incentive for people to re-buy the trilogy, and everyone who doesn't already own Star Wars will buy the new re-release because they want to see the backstory before watching Episode VII, regardless of the OOT's inclusion.

Oh, and also, if there is enough demand for a Blu Ray of Halloween 6: The Producer's Cut, then there is most definitely a demand for the OOT.