Apple has always wanted to be one of the good guys in tech. But now a high-stakes lawsuit with Epic Games, the creator of the hit video game Fortnite, isn't just challenging Apple's reputation. It's raising questions about whether the most valuable company in the world has grown into an illegal monopoly.NPR's Bobby Allyn reports on the federal trial that led to Apple CEO Tim Cook taking the stand last week to defend his company. And Sally Hubbard, who researches monopolies, explains how Apple's control over its app store reminds her of past antitrust violations from Microsoft and AT&T. In participating regions, you'll also hear a local news segment that will help you make sense of what's going on in your community.Email us at considerthis@npr.org.