You always see this kind of language when disruptive change occurs (e.g. production lines Vs. hand built, car Vs. carriage, electricity Vs. coal, etc) but all that really happens is the jobs shift from one area to another, and that people need to adapt or die.
Desktop Support MIGHT decline, but we will see growth in service level jobs at third parties. Instead of having in-house IT staff teach people how to use e-mail, you'll have someone across the country or globe do the same job.
I guess one might argue that you can shift the jobs abroad, but as we've seen in the last few years such out-sourcing is not cost effective in the long term (or at least with skilled jobs it isn't).