I think PSG and Manchester City are still two different teams, even though they are rich teams but they have differences in management. I think, PSG is still not completely good even though PSG has a lot of luxury players, but PSG doesn't have the right coach.
So that became one of the reasons their management was not good, so that in the end it was difficult for PSG to reach the Champions League final from season to season.
But their owners are both Middle Eastern people with abundant wealth, so it's clear that the two teams are strong and big in their respective leagues, but for the Champions League, it's still difficult to solve it, especially PSG, by bringing in a lot of star players, but the team is still not satisfied enough. UCL, the coach is also a major factor because he has a key strategy in his game so for the PSG coach now he is still not sure about bringing PSG to the final or even to the championship.
But about Manchester City I think it's clear, Manchester City has everything with the best quality but unfortunately, Manchester City still failed to win the Champions League title. I think it's because the Manchester City squad still doesn't fully have a high winning mentality, so Manchester City failed in the Champions League final even though at that time Manchester City was very favored to win.
Starting from financial management, squad depth, a great coach Pep Guardiola is already owned by Manchester City but indeed when in the champions league zone the atmosphere heats up even though there are many great players if a coach doesn't bring the team to play better then they won't advancing to the final is the same as failing in this mission, especially since the two teams have never won the UCL trophy at all, but from that effort everyone is still trying to win and well they are always superior in every season in the UCL.