The rates on software seem fair (for the store, cocoa, ...). But what’s the sense in applying a 30% fee on things you’re not related to? Wondering if it’s a “b

The rates on software seem fair (for the store, cocoa, ...). But what’s the sense in applying a 30% fee on things you’re not related to? Wondering if it’s a “bullish strategy” to force people in Apple Pay. It's a really exaggerated percentage for a tip, or a transaction too. What am I missing?