Terry Prachett left instructions to the executor of his will that anything he was working on at the time of his death be destroyed. And they were. I don't believe it was by fire, but they certainly ceased to exist. And he earned far more than Gygax ever dreamed of.A sizeable chunk of the estate is intellectual property rights. Kinda hard to light intangible objects on fire. I guess David Benioff and DB Weiss managed to do it, though.