Is this a valid lawsuit? A court will have to decide, but this isn't the first time Apple has faced similar accusations. Last year, the company was sued by a pair of software developers who called out the 30 percent fee among other complaints. Essentially, Apple uses the enormous popularity of its iOS devices to force companies into accepting a 30 percent cut of all profits. And considering that there's no other easy way to buy and download apps on an iPhone, that sure feels like a monopoly.