Lol I see what you're getting at, but I'd argue that those (incredibly fun!) movies seem "prophetic" only by the same quality that makes them relatable and profound:
They're inspired by history. Just one example being how the prequel trilogy bears heavy resemblance to the governmental structure of ancient Rome, before, like Rome, collapsing from the inside from in-fighting and profiteering in an attempt to control the whole Galaxy, before becoming basically like various monarchies throughout history, that almost succeed in ruling the world (galaxy) by monolithic force.
It's why Firefly was such a success, when it flipped and futurized the American civil / revolutionary wars concept. It gives us something familiar enough to attach to, with twists that make it unique.
Edit: I welcome historians to correct any errors in my rather generalized understanding of history. I tried to get the point across while resisting research rabbit holes. ;)
I think "it's human nature" is an excuse made by the ruling class to quell challenges to the system that benefits them.
Sociopathic hoarding and anti-social manipulation is an abberation that our system artificially elevates and rewards.
If we were culturally more hostile to attempts to rent out our lives and natural resources back to us, and didn't put zero-empathy profit hoarders on the front of magazines, things could be better.
I agree with you on group sizes though. When people are treated like hyper-specialized insects with ID numbers instead of identities, funneled into highly-specialized roles, every one a stranger to the other, something has gone horribly wrong.