Reading these paragraphs in the Joint Statement makes me think that UEFA & Co have been expecting this sort of breakaway move and had the statement ready and waiting to go.
The unanimity expressed about chucking the greedy wankers out wasn't reached in an emergency Zoom meeting. They were ready and waiting and have rolled their tanks out.
"We will consider all measures available to us, at all levels, both judicial and sporting in order to prevent this happening. Football is based on open competitions and sporting merit; it cannot be any other way.
As previously announced by FIFA and the six Federations, the clubs concerned will be banned from playing in any other competition at domestic, European or world level, and their players could be denied the opportunity to represent their national teams.".