Do you know of a previous case that's similar to what you're describing here? Because I'm having a hard time understand this. Unless Apple entered into an agreement with Uber, I don't see how Uber would have an expectation that their relationship with the App Store would continue in its same form into perpetuity. And I'm almost positive there is some condition in the apple developer agreement that says "We reserve the right to terminate without notice or reason" or something similar.

What you're saying is reasonable, and I could see how a judge might agree with the arguments you've made. But it also seems like Apple could say, "We don't like the CEO of Uber's haircut", which is as valid as any other reason to terminate a non-contractual relationship. If Uber wanted protection for the billions they invested, they should have negotiated a proper agreement. Maybe I just don't understand how the law works.