At the risk sounding like a broken record for when we talk about new platforms. What, could one imagine to be the 'Killer App' that drives most of the worlds population to AR Glasses?
Hobbies. You are knitting - you see AR overlay of next stitch(es). You are servicing you car - you see an overlay of the part you are dismantling. You and your mate are doing yoga - you see an overlay of how they are supposed to hold the pose. You are a watch collector, browsing potential purchases in a physical shop - you see an overlay of history and recent sale prices for the piece. You are into electronics - you can see the datasheet associated with the device you are looking at, at a glance. Or the instrument reading without looking away. And so on... Possibilities genuinely seem endless and relatively mass market.
Pre Coronovirus, a killer app might have been translation. (menus, street signs, etc). Hey ho.
IMO the QOL applications of the tech could be enough /if/ the software & hardware are FOSS, low price, and easily available. They probably won't be FOSS though because each of the megacorps wants total control over that market but it's nice to dream.
Pre Coronovirus, a killer app might have been translation. (menus, street signs, etc). Hey ho.