No doubt. But to say that they aren’t successful is not right. And their mere existence puts the thesis you advocated in doubt.
“And their mere existence puts the thesis you advocated in doubt.”
And all of those have had sufficient exposure to Western Civilization (which is underpinned by Christian thought, values, and mores) in order to be where they are at today. If there had been no Western Christendom, then the world at large would be little better off than it was circa the year 1200 AD. That may not be the politically correct, multicultural thing to say, but it is the truth, nonetheless.