the problem is not only about that, but the challenges in the UCL are not as easy as the PSG president imagines and the UCL is not as easy as getting the League 1 title.
no matter how big the team is or how rich the team is, it will only be in vain if it doesn't have high levels of consistency and doesn't have strong mental readiness to win the UCL title.
let's remember last season, PSG had Messi, Neymar, Mbappe and these three players were players who really had very high quality skills in terms of attack, but in fact PSG still failed to win the UCL title.
just imagine if these three players were in teams from other leagues such as Madrid, Munich or Barcelona, they could certainly help win the UCL title.
well, from here we can assess what efforts PSG must make and in my opinion it is enough to maintain a reliable coach for several seasons to provide the opportunity to take this team to a higher level and also provide experience to all players to be mentally ready to compete in the UCL.
I can see that it may not be as easy as winning ligue one of course, but it shouldn't be this hard neither. They have been trying for the last 5 or so years to win it, and they have spent so much money and got so many great players and none of that helped them, they always lost.
I think it's quite important to realize that while it's hard to win UCL title, when you spend this much money on it, it becomes something more possible, this is why we should be considering the situation they are in right now as not normal. I believe if I built a team with that much money then I would definitely expect them to make it better, I would expect them to have at least one UCL trophy by now. Considering they have good players, I assume managers were the main problem.