The MS antitrust ruling was that MS can license Windows to Dell, but Dell ultimately gets to configure the OS for their own customers, including replacing the web browser. This doesn't apply easily to Apple who does not license their OS: Apple is both MS and Dell in this analogy.

It applies to Google through Android. Amazon sells a Fire TV, which uses AOSP; but now Google's licensing forbids Amazon from also offering an Android TV product.

Perhaps Apple should face antitrust action, perhaps not, but the MS ruling doesn't really apply as Apple does not license their software. The ruling was meant to empower OEMs and Apple IS the OEM.