My heart goes out to all the gamers who discovered they were chopped liver during the crypto boom.
Besides that though, I don't see how Nvidia is particularly non-ethical. They cooperate with Khronos, provide high-quality Linux and BSD drivers free of charge, and don't deliberately block third parties from writing drivers to support new standards. From a relativist standpoint that's as sanctimonious as server hardware gets.
American tech leaders often have no other choice. In most states you can be sued for boycotting, divesting or sanctioning Israel for any reason. If you acquire a company with outstanding obligations to Israel, your only option is to fulfill them.
Specifically WRT Mellanox, Nvidia's behavior was more petty than callous.
Besides that though, I don't see how Nvidia is particularly non-ethical. They cooperate with Khronos, provide high-quality Linux and BSD drivers free of charge, and don't deliberately block third parties from writing drivers to support new standards. From a relativist standpoint that's as sanctimonious as server hardware gets.