That’s not true! Only Levandowski was barred from working on self-driving, the judge specifically elected NOT to force Uber to stop all self-driving work [1], let alone stop all software work, let alone this being anything that was a mortal threat to Uber. Uber was also worth about $50 billion at the time, about 1/20th the size of OpenAI.
The point isn’t that an injunction is impossible, but the idea that Apple will get an injunction that shuts down all software deployments at OpenAI, leading to the end of the company, is pure fantasy.