There is many different MR headsets on the market today, and at many different price points. There is the Lynx-R1 headset, Quest Pro, Pico 4, and even the Windows augmented reality headsets. Even the Quest 2 which was only a VR headset, can be used for AR today, because of all the updates. Even many of today's Microsoft VR headsets can do AR as well. Apple's largest hurdle will be their app ecosystem, especially when the other VR platforms use controllers, which are very handy for controlling many games, and other apps. Every Apple rumor shows, that their first headset won't come with any controllers. Where as the latest MR headsets today give you the option of using your hands, or controllers, and some give you eye tracking, or face tracking, like the Quest Pro.