Re: "and run all the important apps"
I've worked in offices where anyone might need to do scanning. We didn't have a scanner on every PC. We had one PC with a scanner, which you'd jump on if you needed to scan something. If we'd been a business who did a lot of scanning it would've been different but then that's a special case in which case your whole argument is meaningless because we're talking about general IT, not any number of niches (programmers, architects, artists, scientists, etc)