I could see an IT department using these (misguidedly) for purely internal purposes: .cam .camera .coop .drive .equipment .institute .media .network .systems .w

I could see an IT department using these (misguidedly) for purely internal purposes: .cam .camera .coop .drive .equipment .institute .media .network .systems .wiki. These are now registered TLDs. You are begging for someone to misconfigure something if you use trivial TLD names internally.