I got a book a couple of years ago that dealt with that subject, along with numerous others.

The author of the essays in the book about how the Axis could have won said the cause was the same in both Germany’s and Japan’s case: racism. Whether it was refusing to treat people like Poles and Ukrainians as people, or treating the people of other Asian nations as serfs, in both cases they lost a tremendous amount of goodwill and manpower for both industry and their armed forces.

Stupid of them, but thank the Lord they were that stupid. It would be an unpleasant world if they had even achieved a draw.