That doesn't make one bit of sense. If a developer is talented they write the cost off in the business model. i.e. the app sales pay for the developer license and seeing as they are talented its easy to achieve.
Not everybody is in it for the money. It's exceedingly hard to make money on the App Store anyway, even if your app is very good. It requires a lot of luck, unless you're building an app based on an already established service.
I know people who have built apps which are much better than what I could do, yet barely manage to cover the costs of the developer license. Granted, maybe they haven't marketed it very well, but marketing campaigns these days cost hundreds or thousands of pounds, which is fairly difficult for a new developer to afford.