Why should Apple or anyone get a percentage? Let me pay at cost plus a fixed fee.
The real question is why I don't have to pay them 30% for software and transactions on my MacBook. Because once you consider that most of those arguments are thrown out.
I’m certain that they could not continue to provide the App Store in its current form without any fee.
And it begs the question - is "cost-plus" the only valid pricing model?
e.g. A single transaction of $10,000 does not Apple more than $100 other than the beforementioned financial transaction fee.
Because it’s progressive to do so.