Yup, lazy IT department. Do the minimum you can to get things working instead of setting things up the way they should be.
As has been stated already, there should NEVER be PoE turned on for any port that doesn't explicitly require it. Unfortunately, that means that someone would actually have to some work and go in and disable it. It's much easier for lazy people to do nothing and leave the switch in its default mode where power is on for all ports.
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