I would not rule out radical change of use patterns.
People will not put on a headset to shop, they will shop as they play, as they watch videos, etc.
Micro-blogging is what Twitter-like platforms are typically called: a picture, a move, a small paragraph, do that 4 or 5 times a day, you have something that looks like a blog yes.
So yes, right now I would not see me putting on a VR gear just to inflige myself the pain that is Amazon, but if you tell me that in 10 years 20% of the online shopping is actually done in-game in a VR environment, I would not be too quick to say it is impossible.