I don't believe that PSG problem has been the absence of star players, remember the MNM, Neymar, Mbappé and Messi, and yet, they couldn't achieve anything after their era namely Champions League trophy, even when almost everyone thought they would have lifted the trophy, I kind of think that their major problem has been with getting the right coach to get them to the promise land and to bring the trophy home. Now that they no longer have star players in the team, I wonder what would be their faith going forward.
What if I disagree with you saying the right coach is the problem PSG has gotten, it's definitely not because Enrique isn't a bad one neither was their former, we just need to understand that these coaches in their capacity tried and they just didn't have probably the enabling environment and the appropriate technicalities suitable for the team because if they do of course they will have had a good chance at the champions League, beyond domestic leagues is a very different spirit that comes with the champions League some times but only a few are able to match up, with PSG they should try grooming and see how well it will work for them away from the usual.