Not defending Apple, but offering forever-services for one-time fees is a great way to go out of business. I would not expect the App Store to be subsidized by hardware sales.
Also, assuming you accept the premise in the first place, it makes sense to charge the developer, who is the one generating work for reviewers.
For instance, why not charge for the services used and a low payment processing fee? If developers bring associated costs, they should pay for it. It just seems 30% is overshooting quite a bit. They want to treat developers like regular customers with regular margins, when they are more like partners bringing them nearly free revenue.
I guess I'm too ignorant to understand how building, maintaining and securing the App Store is 10x more expensive than doing the same for something like Mastercard.
Perhaps I should find a better way to communicate that - making it literally the first words of my post didn't work.