The IT guys got away with doing that in commercial buildings for years. They even had little dart guns to shoot string to pull cables with. Some times trying to lift a suspended ceiling panel had so many cables on top it was heavy. We electricians had to support all our wires. Finally the powers that be changed the electrical code to make the IT guys support and bundle their cables. This was only because the fire departments had trouble fighting fires with all the IT cables in their way.
Shortly after this I had an IT guy ask me if he could use my hangers to run his cables. I told him not very politely what he could do with his cables.
Shortly after this I had an IT guy ask me if he could use my hangers to run his cables. I told him not very politely what he could do with his cables.