Microsoft CEO Satya Nadella is expected to testify in Elon Musk's lawsuit against OpenAI and its CEO, Sam Altman, on Monday. Nadella's testimony will revolve around Microsoft's role in funding OpenAI's shift from a philanthropic organisation to a for-profit firm. Elon Musk has accused OpenAI of misappropriating his donations worth $38 million and abandoning its non-profit mission.