Again though, Apple is one manufacturer. They make a device and supporting software for that device. Unlike the situation with Microsoft where they were licensi

Again though, Apple is one manufacturer. They make a device and supporting software for that device. Unlike the situation with Microsoft where they were licensing software to multiple device makers. It was the OEM agreements that led to them running afoul of antitrust. Since Apple sells a hardware device with software they are entitled to do whatever they want with it. This is true of Android of course too, as we know device manufacturers often modify Android to suit their needs or the needs of their networks, why else do people speak of having to root their devices? That's what makes it an non-abusive monopoly, they aren't dictating the rules for the vast majority of device makers, and doing so in a way to benefit their products unfairly.