This is simply a product of consolidation of where the money is. The gulf between the top teams and the also rans has grown exponentially — and it’s true right across Europe.FA Cup winners since Enic in 200
Liverpool
Arse
Arse
United
Arse
Liverpool
Chelsea
Pompy
Chelsea
Chelsea
City
Chelsea
Wigan
Arse
Arse
United
Arse
Chelsea
City
Arse
Leicester
Liverpool
I'd say the top teams have been taking it seriously. The only one of those 3 outliers that wasn't against a PL team was Pompy too.
If any of the top teams get to the last 8 of a competition at which point they take it off seriously, one of them will almost certainly win it. And most of those teams have deep enough squads to rotate and still progress. Outliers, as you’ve demonstrated, have become few and far between in the Prem era
— in the league and both domestic cups.