He saw the promise in GPGPU 10 years ahead of time and kept funding it out of a stubborness despite a lack of returns until it 1000xd the business.
You can say it was luck but it was definitely not "average".
He also fostered shifting the product line to enterprise- dominant and therefore fostered the acceleration of decline of personal computing. There’s no nuance that I can see reflected in his actions; big money AI spenders come, he jumps in feet first. If “democratization of AI” is even a concept, it’s pretty insulting that the personal consumer is cut out (but let’s make sure China is still getting hardware)