I do know about offloading. Thing is the penny pinchers not wanting to pay more. Sure we can do it in house with our everyday servers.
The big sports arenas in Phoenix metro are way overwired for everyday use. I do mean way way over wired. Thing is they do get used more than once a year and have other events, even though the other events usually come no where near hitting capacity.
This Superbowl on the net is more like a Barret Jackson car auction or PIR before the upgrade. Has some infrastructure in place all year then really build out for the event. Then at least through out the year the basic infrastructure is used for other events at times with still the last feet build out. Probably easier now also. Wasn't that long ago running copper the last feet. Bet if still had that job just run a few fiber cables.
Now mix in cheap ass executives at TV and cheap ass and do not want their ads stolen executives. Try to get funding for off loading. Way way easier than the sometimes build out for events at a Barret auction even with basics in place.