Because no one has commented yet on the legal significance: Musk lost today because the jury found that he waited too long to bring his claims. The jury answers only yes/no questions, so we do not know their exact thoughts, but it is likely they determined that the 2019 and 2021 Microsoft deals were too similar to the 2023 Microsoft deal that was the centerpiece of Musk’s lawsuit. Musk could have brought the same law…
I think Musk's lawyers told him he'd probably lose this suit before he filed it. I suspect he proceeded mostly out of spite and to embarrass Altman by ensuring the concerns even his friends had about his candor and trustworthiness went on the record and were splashed across the media. Musk knew he had little chance of unwinding the theft of a non-profit (and I doubt he cared much about that).
It would have been much better if Musk had actually cared enough about OAI's original mission to bring suit in 2019. However, I'm still glad Musk did this now because Altman and Brockman (with the help of MSFT and others) DID steal a non-profit, or at least subverted it's mission. And this fleeting bit of public embarrassment (funded by Musk for other spiteful reasons) is the only penalty they'll ever see.