I think the distinction, at least in Facebook's version of it, is that you're already in VR for whatever (work, social) and don't have to turn off the headset a

I think the distinction, at least in Facebook's version of it, is that you're already in VR for whatever (work, social) and don't have to turn off the headset and go to a different site to do the shopping. Even if it's Amazon in VR, they get to keep you in their system.