The leading contender for becoming the killer app seems to be (surprisingly to many, including the makers of all the early VR headsets) fitness. Using various

The leading contender for becoming the killer app seems to be (surprisingly to many, including the makers of all the early VR headsets) fitness. Using various game mechanics, you can make exercise so much more fun in VR/AR than say, just a coach on a TV or just a boring screen on an exercise bike. John Carmack has talked at length about how fitness games like Beat Saber and VR boxing surprised everybody to become by far the biggest category. I don't know if Apple will excel in this product category like they did with phones and music players, or muddle along like they did with TV boxes and smart speakers, but I guarantee you they will present some new advances around Apple Fitness and enjoyable fitness/game software. It's fun and it is also something people find deeply meaningful (makes you healthy, makes you live longer, makes you happy) and therefore willing to drop a few Gs on (assuming they have that kind of money) without spending a lot of thought trying to compare specs or figure out if the hardware is worth it.