Thought there was only two de-icing companies?
Swissport have 3 rigs and Airline Services (the company that caused all the delays today) have around 10 iirc. I believe Swissport even de-iced a few aircraft for Airline Services today.
Lots of lengthy delays and cancellations, along with pax stuck on aircraft for 8+ hours waiting in the de-icing queue etc.