It's a symbiotic relationship, but if it reduces to "which came first, the chicken or the egg?" analogy it would be: * the app store is successful thanks to ap

It's a symbiotic relationship, but if it reduces to "which came first, the chicken or the egg?" analogy it would be: * the app store is successful thanks to apps like Spotify * Spotify is successful thanks to the app store I think the second premise tends to be more accurate to the case. If I make the most used app in the world today, I cannot take credit for pumping the success of the app store, because it was already there when I launched my app. In either case, it's Apple yard, they set the rules and charge what they want. Don't place your main source of income in another person's yard.