>but App Store gross margins are clearly likely to be in the 50-65% range, making its break even somewhere between 10-15% of developer revenues.
Apple dont booked their customer's revenue, only their receiving ( i.e ~30% ) end. So those are close to 100% Margin as well.
There are additional $10 per Mac, iPhone, iPad, Apple TV per unit to Services for their OS, Cloud, Siri and Map Usage. That is close to $3B revenue, and again Gross is close to 100% margin.
The only thing that aren't 100% Gross is Apple Music. Where it has a clear unit cost and margin are likely to be Sub 20%. ( You can take a look at Spotify for margins, and Apple also pay labels a little more than competitors because it isn't part of their profit making branches ) And Apple TV+ which is Apple giving away their Services Profits for something given out for "Free". ( Which is one reason I hate Apple TV+ )
Apple are now basically subtracting all of their Software and Cloud Services Cost from Services Segment. Apple could argue part of the reason why you get 5 years worth of iOS update are from those revenue stream.
And yes, none of these Gross Margin takes into account R&D, marketing, operation and other expenses.
Personally I have no problem with Apple charging 30% for Games like Fornite. Which is the industry Standard across all gaming platform. I just wish they lowered the Apps section in the App Store ( Gaming being already in a separate section ) to 15% rather than 30%. And 10% for Subscription.
Considering the cost of running the App Store, and Apple's promotion of App Store credit. I felt 15% is a much fairer deal.