Don't agree that there will be fewer full-time staff members
Don't agree that there will be fewer full-time staff members, sorry. Just looking at trends the last 10 years, staff members roles have changed but we actually got more staff.
I think staff will be doing other things than they are doing now. Instead of administering Exchange, e-mail will be moved to the cloud and something else will take up my time: rolling out security updates or managing software in the cloud.
IT has become more and more critical to buisness success, and that won't change. The more businesses rely on IT, the bigger the support department will be.