Lisa Su saved AMD – Now she wants Nvidia's AI crown
The trouble is that AMD just didn't take AI seriously. For a long time, their equivalent of CUDA was not only Linux only and a pain to use but was outright broken on all consumer cards - as in, they dropped official support for the only consumer cards it officially ran on, promptly broke it so that machine learning runs failed, and dismissed bug reports from the users who were left high and dry because their cards were no longer officially supported. The only way to use AMD for machine learning was to pay out much more than the price of NVidia's consumer cards for server-focused AMD cards that worked worse, were harder to use, and that AMD didn't support for long either. They just never had the small-scale desktop usage that lead to NVidia's cards being the choice for bigger machine learning once scaled up because it simply didn't work.