This gives the impression that suing them is what led to Apple terminating their relationship, but that isn't the case. Epic could have sued Apple without the theatrics and they'd have been fine. They didn't even need to violate the terms of the developer agreement to bring their antitrust lawsuit, which is largely about the developer agreement.
Epic introduces a new payment system and passes on the savings to the consumer. Thanks to payment system competition, consumers can save 20% when buying the same items. Apple sees this and completely removes Epic's game to protect its own interests.
It's not hard to see how Apple's behaviour is harming consumers.
Without the "theatrics" epic would not have had standing to sue and the case would have been dismissed.
https://blog.seattlepi.com/seattlepolitics/2015/05/07/judge-...