The best part of the App Store, years ago, from this developer's point of view, was that it was easy to charge money for an app. No need to set up a system — just choose the price, and Apple takes care of everything. So easy!
Great insight from Brent Simmons about the realities of Apple software development and making money in the App Store. Today you have to do in app purchase and subscription to be sustainable long term and those are a huge headache to implement.