The *majority* of geek developers are really only interested in working on 'cool' stuff or learning something new. Things such as complete QA, maintaincement, documentation are secondary.

In my opinion, the only way to achieve a good variation in polished apps is with a paid app store. Otherwise, you're just going to get many developers writing the same type of app. Developer egos are generally big so of course THEIR app will be best.

Nokia needs to attract the professional developers who have 6 figure day jobs to work on paid apps in their free-time. And since the development is in C/C++ and most college grads are taught in Java these days, the good C developers are generally the ones already with several years experience.