Haven't Asian live sports been using p2p already two decades ago ?
(What is the biggest Peertube livestream so far ?)
This is a major broadcast. I'd expect a full on broadcast truck/trailer. If they were attempting to broadcast this with the ($) option directly to a server from onsite, then I would demand my money back. Broadcasting a live IP signal just falls on its face so many times it's only the cheap bastard option. Get the video signal as a video signal away from the live location to a facility with stable redundant networking.
This is the kind of thinking someone only familiar with computers/software/networking would think of rather than someone in broadcasting. It's nice to think about disrupting, but this is the kind of failure that disruptors never think about. Broadcasters have been there done that with ensuring live broadcasts don't go down because an internet connection wasn't able to keep up.
The hard part is over, and people new to the problem think they are almost done, but then the next part turns out to be 100x harder.
Lots of people can encode a video.