Mike O said:

Nothing, perhaps, but why spend the tons of money and time on a restoration of a version with a tiny existing interested group of purchasers when the existing versions, for which they already have HD masters, are selling like heroine?

This is disproven every time news crops up of a release. Everywhere news is reported the comments section of whatever article or video is bombarded by people demanding the OOT.

It's pure purchase fatigue. There is zero incentive for anyone that already owns the films to buy them YET AGAIN, unless they're the minority of collectors that has to have every release for their collection.

The reason every release up to now kept adding more changes was that George knew he could combat the fatigue with the promise of something new each time.

Now that he's out of the picture, the only thing they can do is the one thing they haven't yet and that's release a properly restored OOT. It's either that or tinker with the films themselves and I doubt they'd risk that as that would set off a firestorm with the TFNers and their worship of Lucas' "original vision."