> "Legal and financial sense" is how you run a business.
That is how immoral people run a business. But there are a great many businesses in this country run by people who (correctly) recognize that there are higher obligations than the law and making a profit. Treating your customers fairly, making good products, doing things in an ethical way... these are not optional to a well-adjusted person, even if not required by the law.
Continuing to serve your loyal customers even has benefits above and beyond the intangible. When the bubble pops (and it will pop), Nvidia's sales to AI customers will crater. When that day comes, they will come to regret chasing away all the customers who would still be giving them business if they had not been cast aside as "not profitable enough, sorry guys".