I actually agree, that's one reason I think AR glasses and goggles and especially full VR headsets will always only have a small niche at best. But on the other hand Apple's solution has about a billion compatible devices out there right now. If AR is ever going to have some genuinely useful applications for the general consumer market, this is how it's going to start. In other words if ARKit fails then I really don't see how any other AR approach can have a chance.