This might be irrelevant, but... What of the coming "internet of things"? Objects will literally be part of this network, moreso than before, not just the traditionally-thought-of devices. Then we have wearable tech and other infiltrators of every-day-life that will become less visible, while also becoming more integrated. There is unheard of information on any single human being, with the right know-how. Those born into this milieu will not know a life without it.
So yeah... The biggest jobs will not be creating information but managing it. It really will be "data mining".