I gave that hope up years ago.
He backed himself into a corner and doesn’t want to admit that he can’t fit it all into a final book and/or just doesn’t enjoy writing that world or story anymore.
It would be nice if he released an outline or draft. He probably could have milked that since I know I’d have bought both a draft and the final book whenever he finished it.
I have an auto hotkey script that I always have running. It just takes my clipboard and sends the key presses to type it in when I press Ctrl + shift + v.
It gets me around most of this sort of bullshit.