I suppose that's the point really, much of Dune was about a indulgent society, even indulgent in politics, which manages to remain stagnant in almost anyway.

Warning, I might spoil something if you read on. I'm going to talk about how I felt this ended.

Dune focuses on the uses of drugs, sex, and religion to control societies. It showed a universe where for thousand of years the society was controlled by a few elite, who were themselves controlled by the past. The rebels to the universe, the Atreides, managed to find a way to collapse that control in on itself, and lead humanity to the next great thing.

The book itself ends just at the end of this collapse, or the end of the Golden Path, and it's a fascinating thing to watch. I really didn't have much of an idea of what the Golden path was till the final scene, and almost the entire book clicked for me. It's rare to find something as complex and real as Dune, and the ending was simply amazing to me.

It should serve as a reference for all other science fiction writers, especially television ones, on how to avoid falling into the dues ex machina trap, and still creating amazingly rich and detailed worlds.