In the article he does mention that this is more like a "gray swans" situation. I take that to mean that he is in agreement with many that this wasn't entirely unpredictable.
It may not have been obvious to a certain type of investor, but many here on HN have said that Nvidia is overvalued. Also given the speed of which many others have court up to OpenAI, it wasn't unreasonable to expect someone to overtake them or find an alternative path.