Here's a free startup idea: the "mirror cafe". Two cafes, one in SF, one in NYC, with exactly the same layout inside (down to the positions of the tables). VR links the two spaces together. Once you put on the headset, you can see and talk to people in both places. You'd be able to "grab a coffee" with someone across the country (though you'd have to drink it with a straw to keep the coffee cup from colliding with the HMD)!