Apple just kicked Fortnite off the App Store

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.

As a consumer, why can't there be an alternative App Store on IoS if I don't like the Apple terms? Apple shouldn't force consumers and developers to provide them with 30%.

If you don't like the service or product, don't buy it. There are Android, Sailfish, Postmarket, Mer.

It's extremely unethical in my opinion to force some service provider to adjust the service to your needs/preferences.

Why on earth is it unethical?