Difficulty of outsourcing iphone application development

One important point about iphone application development model which i realized is the diffuculty of outsourcing the app development. This is mainly because of the ease of market access. All the applications can only be sold on appstore and any one with an account can upload an application to store. This strongly ties developer and application to each other. In a different point of view we can say that this somehow protect hand work of worker according to capitalist.