So VR will be in competition with all the other entertainment industries. But is that useful in any sense just besides entertainment? I doubt.
It started all years ago with Google Glass. Even at that time I doubted that there is value in this. Now, we are here and Google Glass is finally dead. I know it is in the rumors that Apple will bring its VR headset soon. But really? Will that make it better? I doubt.
VR will be in competition with all the other forms of entertainment. It is something, you can't just do besides. It will need your full attention. I doubt that there is some real usefulness.
My house is near a hughe lake. There are people swimming for real, not virtually; there are people sailing for real, not virtually; there are people windsurfing for real, not virtually.
AR can help with navigation (overlaying the directions right on your field of view); with social interactions (facial recognition, even locally, can identify people already in your contacts, and remind you "you wanted to thank her for that birthday present", or whatever); with learning about the world (look at a tree, a flower, a bird and ask for an identification)...
And that's basically just taking apps that exist now and imagining them integrated into AR glasses.
(Yes, there are definitely concerns about things like privacy, with the possibility of having cameras on our faces all the time; I am hopeful that we will find solutions for these, but don't have good ones off the top of my head.)