Isn't the failure you note in 4 always inevitable in a system where Capital translates to power?
Just that, capital translating to power is not a universal truth. Historically too, various recipes have tasted success to move up power ladders. Be it high moral values, smart statecraft, peaceful bottom-up people movements-art-science, or worse like violence, anarchy, barbarism; or a hotch-potch of all those!
Will be fun to watch how things pan out today!
For a while, have been finding an affinity with MN Roy with his “cultural prerequisites of freedom” and “radical humanism”. But yes, completely agree that modeling all the world’s complexity into a any grand ism is being foolishly ambitious.