Horace Dediu has created an eye-popping chart about just how big Apple's iTunes revenues and iPhone accessory revenues have become. iTunes was once considered a "break even" business model for Apple, meaning that the company wasn't too concerned about making a profit on iTunes sales but using the media sold through iTunes was a way to sell more iPhones. Likewise, Apple's iPhone accessory business was modest compared to sales of Macs, iPhones, and iPads. However, when both businesses are taken into account, iTunes sales and iPhone accessory sales generate more revenue than all other smart phone manufacturers except for Samsung.
In the fourth quarte
