[asdajksah2123]

Actually Sony does have a monopoly on the Playstation market. A monopoly is not in itself illegal. The first question is whether Sony has used that monopoly illegally or defended the monopoly illegally. Second, even if it has, the question is if the harm caused by it is worth even pursuing Sony.

Most likely neither are true for Sony but even if it is, it should be self apparent that distorting the smartphone market, or even the iPhone market, devices which are almost essential parts of modern day living can cause orders of magnitude greater harm than anything Sony could do in the game console market, which is much smaller, much narrower, and far less important.

And all this ignores that the DoJ's filing is about antitrust issues beyond just monopoly issues.