You just gave me an idea. We just got the D&D 5e DMG and my 15yo daughter is having a blast creating a world. I'm old school, was a teen when it first came out and still have 1e PH and DMG.
Maybe given Tolkien and others, I should start to build a works showing the long-term failures of statists. I think I could do it Eberron style having several long-term countries/societies near those statist collapses of excess of each of them and having to make one's way in that environment.
I've thought about putting threads of anarchy into my D&D stories. I haven't done anything explicit yet, but I do tend to make governments either incompetent or straight-up evil.