This legal action will make anybody think twice before walking out of Cupertino with a stash of secrets.

Which is what OpenAI will argue - that Apple is negligent in protecting their trade secrets. Trade secrets are not protected in the USA if the company doesn't take reasonable effort in protecting them. I would feel quite confident as a lawyer arguing against a company that intentionally has their employees use personal accounts on their corporate devices, long after using separate work accounts and devices has become SOP for large companies with serious security concerns (almost certainly including OpenAI itself).

This is better explained in The Information article (which is paywalled): https://www.theinformation.com/articles/apple-icloud-policy-.... Emphasis mine:

> When new employees join Apple, the company often issues them an iPhone and Mac and pays for an iCloud account with a large amount of online storage capacity. Crucially, during the onboarding process, Apple encourages new hires to use their preexisting personal Apple IDs with this iCloud account, through which their co-workers can share internal Apple documents and other files with them.