They will become mainstream because the advertising industrial complex will see the opportunity to have a paid subscription model to reality with ads from the moment you open your eyes to those on the free-tier.

Realtime on-demand satnav in ar, onscreen messaging, news updates etc, the facial recognition is just one aspect, having automatic connections with people looking at you across a room signifying interest.

This is dystopian to me but I don't see how it doesn't eventually become mainstream.