Real-life distributors ship your product ONE time. Imagine if they had to ship another every time they were asked forever. Those real-life distributors also don't advertise and sell your product for you either while providing an entire platform for you and your users to interact.
I'm not saying that 30% is where it should be, but expecting higher costs for all the extra services provided isn't unexpected either.
> Imagine if they had to ship another every time they were asked forever.
The bandwidth and storage is an absolute rounding error at apple’s scale. If they want to use that as an excuse, then charge app makers cost for downloads. I can promise you it’ll never come close to 30%.
I'm not saying that 30% is where it should be, but expecting higher costs for all the extra services provided isn't unexpected either.