Probably mostly "stock buybacks" and "Apple unrelated R&D" at this point. More seriously though, I'm not sure if anyone outside of Apple could actually tell if

Probably mostly "stock buybacks" and "Apple unrelated R&D" at this point. More seriously though, I'm not sure if anyone outside of Apple could actually tell if the app store as an organization is revenue neutral or not. Certainly their services revenue has been growing over time https://www.statista.com/chart/14629/apple-services-revenue/#:~:text=Apple's%20services%20division%2C%20which%20includes,%2411.45%20billion%20a%20year%20earlier https://www.statista.com/chart/14629/apple-services-revenue/....