I think we can all agree that Apple is entitled to some compensation for developing the platform, SDK, and tools (e.g., Xcode). After all, Epic takes 12% commission from apps distributed through its store, which is more generous than Apple and Google, but it is certainly not free.
So the real question is, what is fair? €0.50/year beyond 1 million install is certainly prohibitive for free and freemium apps generating very little recurring revenue from each user.
Apple's take should be capped to more reasonable amount, such as €0.50/year for active users that generate a minimum revenue of €2.00/year or €1,000/year per developer, whichever is higher.