From what I saw Swissport had all 3 rigs up and running and delays weren't too bad for them, ~1 hour or so which isn't anything unusual during heavy snowfall (and they even managed to de-ice a few non contracted airlines).
Not true. The QR46 was delayed for nearly 4 hours. Partly due to Swissport de-icing non-contracted airlines first.
Have Menzies not got any de-icing kit?