I assume you’re just describing a hunch, but I don’t think I’ve seen any evidence that would suggest one way or the other. It would be a bizarre business deal, if so, but not impossible.
Oh yeah, it’s a total hunch and assumption on my part. Disney has been killing it in regards to franchises, whether it be Star Wars, Marvel or their live action adaptations. They’ve been giving fans what they want and they love money.
Of course, Fox could still be retaining distribution rights or there could be a myriad of other reasons why having the original cuts of the movies in true HD not available.
I just don’t buy that it’s too costly to do because it’s Disney, or that it’s too difficult. I don’t have the knowledge or skills to pull it off but LucasFilm certainly does. Otherwise, a group of impassioned and talented fans have pulled off a feat that those powerhouses have deemed impossible (kudos to those talented fans anyhow).