https://www.theguardian.com/technology/2021/may/20/apple-epic-games-trial-tim-cook-testimony > The Fortnite maker, the most popular game in the world, claims the way Apple runs its App Store amounts to a monopoly > Tim Cook, the chief executive of Apple, is set to testify on Friday as the star witness in a high-stakes case against Epic Games that could upend Apple’s business model.