There are already open stacks out there that help. The problem is that Nvidia provide a full stack option: chips, networking, and software, whereas AMD only pro

There are already open stacks out there that help. The problem is that Nvidia provide a full stack option: chips, networking, and software, whereas AMD only provide the chips, you then need another company's networking, and then you need to plug together open source software. I'd also bet that if you buy enough of the Nvidia chips, they'll probably send in a bunch of engineers to get everything working with their full stack. AMD won't be able to do that in the same way because they're not vertically integrated.