I don't see the problem, Epic explicitly went around the app store's payment process and terms of service. It's within Apple's right to pull Fortnite. They are also suing Apple as well.
Why should Epic get a “special arrangement” from all other developers?
If you don't like the terms, then don't be on the Apple App store, but of course your missing a huge swath of the population thus the 30% fee. Being on the App store is essentially unlimited marketing and exposure for your app. Cost of doing business.
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