I see where you are coming from(in a way) you have sunk money into this and you want to see it through, however you do a huge disservice and if I'm perfectly honest where rather disrespectful to Robert Jordan there, and the sad thing is it's true people do read WoT for the Brandon books at the end, which I find incredibly disrespectful and I haven't even finished, you relegated Robert to the sidelines and forget the work he did to make WoT work.
Now you looked at this from a buyer's standpoint, but you completely overlooked the point of the authors'. I feel a little attuned to this hoping to become one myself, and while I would prefer my world and story out there(as long as it isn't stolen.) I can totally see the angle of 'this is my life's work, it would be wrong and inappropriate for anyone else to finish this.' You forget their attachment to the story instead looking at it from a money and influence view.
All in all what I'm trying to say is, George has an interest in his books to and you forget his attachment and decades of work put into it, no one has sunk more into the story than Martin.
But all this is from an outsider looking in as I have never read the story.