I hate to be That Guy, but Apple doesn't care how much money you keep vs. how much money you pay others when you accept In-App Payments. If you paid 90% of your IaP revenues to the power company instead of to content creators, Apple has no way of knowing this. It just would mean that your business has no hope of being profitable. Fanhouse can still pass IaP revenues onto their customers ("creators"), but they're goin…
Do they get 30% of what the end user pays or 30% of the revenue the app maker keeps (30% of Fanhouses 10% is 3%)?