OpenAI Cut Off a Billion-Dollar Customer to Avoid Elon Musk

IMO headline is misleading because it implies OpenAI is being petty, but in this case the cut off is extremely understandable from a business and legal perspective.

Elon seems to be as flamboyant as always but I don't know what's gotten into him, he seems more disagreeable than ever.

Quite a contrast for people who would expect a financially-driven hustler to be way more satisfied with their worth after it reaches such an extreme level.

What has he failed to do that's so unfulfilling?