I mean it was messed up, which is why the other world powers raced to develop their own capabilities.
And it remains messed up to this day - some countries get to be under their own nuclear umbrella, while others don't.
This kind of selective distribution of superpowers doesn't lead to great outcomes
in that case in particular it led to 80 years of relatively calm geopolitics kinetically, all things considered. I'm not sure I want to live through an AI cold war, but it sure seems I don't get to choose.