Elon doesn't need to run the best AI model. He needs to control the best hardware. Nvidia is the most valuable company on Earth and their models aren't the most popular. The hyperscaler play works.
Everyone is massively underestimating how FAST we're about to change our world as AGI/ASI comes on line. We're on the verge of massive scientific breakthroughs ( that will enable accelerated abundance, from Longevity to Energy breakthroughs. Don't Blink.