Especially for Paris Saint Germain, I feel they are now more even, they no longer rely on one player which I think is one of the things that makes them play better this season and can be here.
When a team only makes one player the mainstay then they will be easier to read. And this season Paris Saint Germain can be more collective in the game so that makes it more difficult for other teams. For example when they still have Mbappe, when they play almost most of their goals are Mbappe in the front line.
I love that part where you said they no longer rely on one player which actually makes them more deadly. Yeah, when a team is like this where they don't rely on single player to make or get the goals for them, they become so unpredictable because when you think you're marking a particular player out another steps up in his place. Against Aston Villa, in both legs Dembele didn't get a single goal, it was only two forwards that scored in the entire two legs which is Kvaratskhelia and Doué. PSG scored a total of 5 goals across two legs and 3 of those goals were scored by two different defenders. That's what makes them dangerous.
Yes, this applies to all teams, and it is not uncommon for us to see teams that do not have star names can win titles. The presence of star players is certainly a plus, there is nothing wrong with that, but they also have to know that they cannot rely on just one player.
Last season, when Leverkusen became champions, there were no players who really had big names. In fact, players who were considered ordinary at that time were able to show their best game. And a few years ago in the English League, the same thing happened, where a team that was not even considered managed to become champions, yes they were Leicester.