video chat is another connection mechanism that provides more depth in ways that text/photo sharing never will -e.g. it reaches more of our senses.
the next big thing will be something very different and the trick will be getting it into every home. imo, it's clearly virtual reality related. i should be able to put on a headset/glasses and and sit in my living room with a friend and have that beer while chatting with them so it feels like they're in the room with me. the more real this can feel the better.
i'd imagine google/facebook are already racing to find this next big thing today. getting this into every home is the key. this is a race worth investing a lot into imo. if someone else can beat one of these big companies to this, they'll find themselves in position to surpass them.