Can Marxist theory predict the end of Game of Thrones?

The Lannisters' gold has run out. The bankers are impatient. The sex-and-power feudal system of Westeros is in its dying throes. Surely revolution is inevitable?

The elite are in trouble, their sources of wealth exhausted, their civilisation assailed by crazed fanatics from without - while, within, the masses are in open revolt. No, it's not the eurozone - it is Westeros, the mythical venue for Game of Thrones.

It was JRR Tolkien, the father of fantasy fiction, who summed up the attraction of a genre that has become, in the past 60 years, a staple of modern culture: "a Secondary World into which both the designer and spectator can enter, to the satisfaction of their senses while they are inside".