They may have worked hard, but to be honest in Ligue 1 they are already dominant as it is. It can be compared to Bayern's dominance in the Bundesliga. As for the Champions League final, it was certainly awesome, a smashing victory that had never been seen before in the history of the tournament, but then again - they were playing against Inter, who didn't know how they ended up in the final, it wasn't a fight, it was a deliberate coronation of PSG, imho. So I don't know what they need to work hard on, they've already worked out that they need to maintain such a high level, that's it
If for Ligue 1, PSG is indeed unmatched, this club is still very dominant and so far no one has been able to seize their position after they started from their execution. Unlike the Bundesliga where the fight for the championship title and also the clubs have started to be tighter and stronger competitors. And this opens up its own uniqueness.
but fortunately even though PSG is always considered a genius from a weak league, they have proven that they deserve the victory and also won the Champions League, where this is not something that is so easy to achieve.