carpet is usually banned from computer rooms because it encourages lint and dust, which clogs fans and chassis and air filters. most data centers do NOT want the janitors in there doing weekly vacuuming and banging into the servers!!
This was a mainframe shop and we were the fishes swimming around behind the picture window. After you've spent £4 million on a computer you want to show it off..... and we did the cleaning, not a cleaner in sight