Let’s keep the facts straight here. Epic did deliberately breach Apples Terms of Service, which they signed when they entered a deal with them, by circumventing their store payment processes and encouraging users to do the same - by offering a 20% price cut ONLY when they use Epics ingame payment method (which circumvents Apples).
This, in my opinion, was a really dumb move, because through this they forced Apple to kick them out. Instead of abiding by their rules and then starting a public protest & taking them to court.
Now Apple can use this deliberate and full willing breach of a signed agreement against Epic in their court battle, which will give Apples lawyers so much more argumental advantage.