I don’t think that’s what they’re worried about. Apple has more money than any other company on the planet. They care about their brand perception and it’s obvious that this would hurt it in the same way that crappy, cheap parts would. Opening the iPhone up to other App Stores and payment systems would be a huge negative for that. In fact, one of the main reasons I like the iPhone and Apple’s ecosystem is that I don’t have to worry about vetting whether a purchase I’m making is secure or whether an app I’m downloading is potentially nefarious. I don’t want that. I just want it to work when I need it and to be able to find and pay for apps quickly and silently. Epic might be more trustworthy than some (I, personally, don’t trust them after their past behavior) but this isn’t just limited to Epic. It would mean that every app I download, potentially, would have their own launcher like on Steam and that situation fucking sucks despite how awesome Steam is.