> [A Macquarie Capital researcher] expects that this year alone, Apple's iTunes, software and services business should generate about $30 billion on a gross revenue basis, which would be more than 83 percent of S&P 500 companies. [...] Schachter believes earnings before interest and taxes through iTunes, software and services will account for 21.8 percent of the company's profits this year.

http://appleinsider.com/articles/14/03/24/itunes-and-app-sal...