More recent accounts suggest that an agreement has been reached.
The BBC leads on this operation with Sky and ITV contributing, and from what I can tell it's a multi-million production including the UK's largest ever 4K outside broadcast. The fees that were being asked were in the six figure region, according to reports. I guess the question is whether rival broadcasters should be offered footage for free or not.
I suspect, but don't know for certain, that many international broadcasters will be getting feeds via prior arrangements either with UK broadcasters (e.g. CBS and ITV, NBC and Sky) or via agencies that have purchased rights for their clients.