Yeah, I can't either especially since the movies were so well done. I don't understand why you wouldn't invest that $1.5 Billion into doing something that hasn't been done already. He's not Tolkein but they could have brought to life one of Sanderson's series and gave people something that they haven't seen before.
Well, more than that, you wouldn't have to put 1.5 bil into a new property. They're dirt cheap. Then spend like half a bil making it good and you've created a new franchise.