Cloud computing
If cloud computing do indeed last long enough to be economically viable, then may be some jobs will disappear, but do you all remember IBM OS Warp ? Everything suppose to be centralised, I think once they have flogged enough servers, and other widgets, then they are going to say, " Too much control in the hand of a few ", so everybody should buy these fancy little machines at a cut down prices and have the full control of their data and their future.
Seen all before.