They might have the capacity in some theoretical sense, but without that capacity being carefully nurtured, MOST brains never exercize it.
SOME brains seem to come with this "reaching out/creating/dicking with accepted norms" built in from the beginning, but those are few and very, very far between.
I think of my work colleague and friend of long ago who said to me, "I'm not trying to understand the world, Buck. I'm just trying to live in it." So at that rate, which my experience in this ol' world tells me is much more common/normal than, say, Vincent van Gogh starving for his weirdo despised art, organized/institutional religions are the outcome of normal human thinking. And NOT an imposition on a bunch of downtrodden huddled masses yearning to dream free, so to speak. People want to internalize the nomos, otherwise they live in anomy!
Of course, if you believe all religious thought is bunk, then internalizing a religion-based nomos is going to lead to Marxian alienation, sure. Isn't this basically what the Buddha was saying? (Littlestone, help me out here!) But the Buddha took it even further, telling us the entire function of Mind was to create Maya/Illusion, an Uber-alienation from Truth.
Note though that if something like that were true, then we'd be back in my boat: people don't want to be free to REALLY dream/set their psyches free, in the sense of cook up (Hah! The Raw and the Cooked) truly new wild stuff. We just want more of what we're told is better stuff. Interesting.