Good recap of the OpenAI trial from TechCrunch. This part is really the whole case:

OpenAI’s attorneys have asked every witness to describe specific restrictions put on Musk’s donations, and none have, including his financial adviser Jared Birchall, his chief of staff Sam Teller, or his special adviser Shivon Zilis. They say everyone involved agreed that private fundraising would be required to achieve its goals, and note that Musk himself attempted to launch an OpenAI-affiliated for-profit he would personally control, and later to merge OpenAI into his company Tesla.