[nugget]

If Apple had vast majority of market share, pre-installed iTunes, integrated iTunes functionality throughout the OS so that it had more intuitive prominence than other competing services, then yes, that would be close to the definition of antitrust as I understand it (using dominant control in one market to create or maintain dominant control in a second market). This is what Microsoft was penalized for, appropriately, with Windows and the browser market.

[bduerst]

Got it - that makes much more sense.