Recurring revenue is a much different proposition— even for small or first time apps. A player like netflix which handles it’s own marketing, payment and all other ancilliary services doesn’t need to anything the apple store is offering other than distribution. I would understand if apple took $1 or some one time download fee but to regularly claim 30% of Netflix revenue seems like a stretch. While I think apple could make the case that they signed up through iOS, i think it is equally fair for Netflix to disable this option.