Well this time he actually is one of the founders. He invested 45 million to launch OpenAI and he was co-chair with Altman

https://www.forbes.com/sites/theopriestley/2015/12/11/elon-musk-and-peter-thiel-launch-openai-a-non-profit-artificial-intelligence-research-company/

This is why you add a disc reader and a laptop, that can run directly from a power brick without a battery installed, in the safe. This way the next generations have a way to read it and transfer it to modern media.