Grok and Meta are non-sequiturs here. Their reputation isn't being put under a microscope - Apple's is. And just looking at Apple's history suing businesses like NSO Group and Corellium doesn't instill much confidence in their ability to protect their IP or exact damages outside of a legal settlement. Up against OpenAI, they'll be forced to fold for all the same reasons they had to throw away their (entirely justified) case against NSO Group.
They absolutely deserve to be under a microscope.
But Apple lacks the political intuition to take NSO Group down. Apple is reliant on the US Federal government, which in-turn is deeply reliant on both NSO Group and Apple. It made all the sense in the world to force the companies to settle, even if it was an absolutely gross miscarriage of justice. We're going to see the same thing happen here; OpenAI will cry foul to the feds, who will inevitably determine that they can't let their investments pickpocket one another. Mr. Trump will send a very strongly-worded voicemail to Sam and Tim, asking them to make amends or face limited federal support in their future ambitions. Both of them will likely settle out-of-court and then announce a partnership to bury the hatchet.
It will be gross, unfair and likely cause irreparable market harm. In other words, forcing Apple to abandon their lawsuit is nothing that the fed hasn't done before.