AI has been a (minor but existing) industry before OpenAI. E.g. Deepmind exists since 2010, 6 years before OpenAIs founding. Sure, OpenAI has contributed to it, in great deals, but Nvidia has always been there during the growth of AI. In 2012, AlexNet has been trained on GTX 580 GPUs, in 2016 AlphaGo used Nvidia GPUs, etc.