A service to whom? Protecting users is a service to users, not to developers. This is a selling point of iPhone, and thus Apple receives money from users when they pay for the iPhone.
Think about it this way: totally free apps with no IAP get reviewed by Apple too, and there's no charge to the developer except the $99 Apple Developer Program membership fee, which Epic already pays too.
Protecting users is absolutely in the best interest of developers.
> Think about it this way: totally free apps with no IAP get reviewed by Apple too, and there's no charge to the developer except the $99 Apple Developer Program membership fee
Yearly fee. And about $500 a year in hardware depreciation, because you can reasonably develop for Apple _only_ on Apple hardware.
This is _way_ more than Microsoft has ever charged, btw.