As the world's richest man, with a net-worth of over three-quarters of a trillion dollars, Elon Musk's resources and connections often make it easy for him bend Silicon Valley to his will.
But that's not always the case, as evidenced by his $150bn (£110bn) lawsuit against OpenAI, currently playing out in a California court.
Musk co-founded the company in 2015 with CEO Sam Altman, and left three years later after a power struggle.
The feud has fuelled a costly showdown between two tech titans – but in this courtroom, there is no doubt who is calling the shots.
Musk vs Altman is just the latest high-profile Big Tech case to cross US District Judge Yvonne Gonzalez Rogers's bench.
