Of course, money is a very important factor in football, but what should not be forgotten is that football is played with 11 people. If PSG could not win the cup despite having Messi, Neymar Mbappe on the offensive line, there are also some external factors. 8 more players we haven't talked about played in PSG. Attackers shouldn't be the only thing we think about. Additionally, the draws and the teams winning the draws are also very effective in such situations. Football is a sport where nothing is guaranteed.
Having Messi, Neymar and Mbappe on the front lines is not a guarantee for PSG to win the Champions League trophy. The domestic league can be dominated easily, whereas in the Champions League it doesn't just rely on great players, but requires the unity of a team that is well connected to maintain constant performance stable. The money that PSG has cannot easily buy the Champions League trophy, the internal team must be built by trusting each other, the team mentality needs to be improved and an experienced coach will have a positive impact on the team.
A great striker will not function well if other players are not able to contribute well, PSG must learn from what Chelsea did in the Abramovich Era and Manchester City who just won the UCL trophy. Luis Enrique is a top coach who has won several prestigious titles, PSG must give him time and freedom in compiling a squad with the players he chooses.