Apps on App Store are not commodities, and never will be. Commodity is something that isn't innovative and the only way to compete is with price. Like lightbulbs. And Android phones. That's why software matters, that's where the innovation is. If you create an innovative app with real value, you make money. If not, you end up as a homeless developer.

As a sidenote: 'developers become homeless' is a story guaranteed to go viral. Brilliant marketing.