A club that has large finances and continues to spend a lot of money to bring in star players with great skills will ultimately experience losses because if the goal is to win big titles such as the Champions League, it should not need to be too ambitious and continuously pressure players to continue to stay at PSG. and putting pressure on winning the champions league title, while the burden you say will ultimately reduce the quality of the players' performance and their enthusiasm will decrease.
Like the case of Kylian Mbappe last season, in the end it seemed as if Mbappe performed really well, but we don't know whether he had given all his skills and caused a big loss to PSG when he had to leave for free when his contract had finished.
There are still several other risks such as losses that do not get anything from the initial goal, in the end the money that has been spent does not get any return and maybe I have to agree with you that developing the talent of young players from academics would be better or for example bringing in 1 star players and several players others from young academic players.
In this way PSG will not lose too much.
There is nothing wrong if indeed a big club like PSG expects something more especially when spending a lot of money to make their squad better then it is not wrong to expect better results especially in big competitions because their purpose of investing is for that.
But we need to realize that things like the big league Champions League are not as easy as imagined because even if a big club like PSG in ligue 1 it will look the same when compared to several other clubs in the Champions League because in the end this is not just one 2 big clubs but almost the average club in the Champions League is a big club so no matter how hard PSG tries to make their squad as luxurious as anything in the end it will be comparable to several other big clubs that make the player factor alone not enough to make a club triumph in the Champions League.
There must be several other factors that support the situation to be better like the coach factor and it could be that experience also determines a mentality because in the end when the benchmark is only the player alone until whenever the Champions League cannot be overtaken by PSG.
Yes, there's nothing wrong with that, but in my opinion PSG has too big ambitions to force the players to continue to use a lot of energy and always maximize their performance to get what the PSG owner wants.
I just remember some of the previous problems and of course I know that players like Mbappe must also be forced to stay at PSG and in the end they will lose even though previously they had always defended them with all their efforts, but it was all done to get a prestigious title.
Maybe this is what I mean that the player's mental experience is also very important but the presence of Neymar and Messi at that time should have provided a big opportunity but it turned out the results were the same as before and indeed all of this does not depend on the coach or players but the PSG owner and PSG management who should slowly building PSG to be more consistent in CL competitions without having to force the players.