The ESL isn't happening as UEFA will just modify the Champions League again. At the minute most of the big clubs are getting the biggest chunk of the Champions League money as that "Value Pillar" using a co-efficient allows them to miss a season or even 2 but still get paid more prize money that a team in it for just a single season.
I still think that was the plan for PIF in the early days when they were looking for a PL team as it was 2018 when they first looked at the mags. They will have known that the ESL would have brought in £billions of revenue and in time more than PL & CL combined given it would be the biggest teams in Europe with all the World's best players in a single league.
With the backing of PIF a club would certainly get an invite to the ESL but it didn't happen and it's hoyed a huge spanner in the works. If the ESL had happened they'd have started with a £300m club and been into the £billions in time that's for sure. The ESL died but what made it even worse was all the rule changes since 2021 to stop rich owners just throwing money to buy success and potentially leaving a club in the shit if it doesn't pay off. That means they've got to do it the hard way, via winning things and getting regular CL footy.
The problem is with the Premier League that there's usually only 4 CL places but 6 'big' teams competing for them. In recent seasons the mags and Villa have broken into it but it's been helped by some of the big 6 clubs having bad seasons. Man Utd seem to have recovered and Chelsea will in time but Spurs at the moment could mean it's 5 teams going for 5 places. If they stay up they could well bounce back given the revenue they generate.
The mags can't do that as they get £200m less a season and without sustained success they won't bridge the financial revenue gap either. They're chasing the impossible dream as Leicester found out and in time they will fail and revert back to type.
I said in another thread, I think they'll maximise them revenue wise and jump ship to get a return on investment. As
@Redandwhitedust mentions, if they sell the mags they could well look at another club in Europe that has 'easier' access to a CL place every season but hasn't yet grown to the global brand like one of the top clubs but certainly has potential.
Atletico Madrid is exactly who I thought of when writing the last paragraph in my post above.