Reading that made me think of another question. What is the policy for novelizations? They generally say something along the lines of "adapted from the screenplay/teleplay" of such-and-such. Do the writers of the script that novelizations are based off of get a cut of their sales?
At the risk of being accused of making stuff up, it is my understanding that the rights to potential novelizations are well-covered in the screenwriters' contracts.
As I understand it, the screenwriters technically get first crack at doing the novelization. They almost always waive this option, however, because, by Hollywood standards, writing a novelization is too much work for too little money. I honestly can't think of a case where the screenwriters wanted to write the novelization. It's just not worth their time.
Joe Eszterhaus wrote the novelization of F.I.S.T and he made about two hundred grand for it, so it was certainly worth his time. Funny how two hundred grand quickly turned into chump change when you take into account how much the price of his writing fee has gone up since F.I.S.T.