I've always wondered why Apple hasn't approached developers of popular applications and offered them a 'market' for the sale of their apps. iTunes would surly be the perfect medium for leveraging the sale of great mac applications and programmes for consumers, such as Comic Life, Delicious Library and Acquisition. All payments and application information would be through iTunes. Apple could take a small portion of the sale, but hopefully it would boost sales for the developers. What would be the pros and cons of this exercise should Apple undertake it?