No billionaire's focus can even come close to matching a nation at war. In less than 25 years, governments went from realizing nukes were possible to creating an arsenal large enough to destroy civilization (1).

I think the great challenge of our generation will be a way to come together with such single minded focus to tackle problems without trying to exterminate each other.

(1) https://www.history.com/topics/world-war-ii/atomic-bomb-hist...