Some or most are missing another point.
Who is going to Ref the ESL?
Any Ref from the various European Leagues will be banished from domestic competition in order to keep status quo.
Sure it would be great to be away from Mike Rileys boys club but the domestic leagues Uefa, Fifa will all hold over the Refs that if they go to Ref a ESL match they will lose their status within FIFA, the various Federations, and Leagues.
So what do Refs do? Go work a match or two midweek or be employed for a season?