Yes, we can see how in the end, Chelsea and Tottenham also saw how they found gaps in the game applied by PSG. PSG did win the Champions League last season, but their strength has not yet been dominant.
This year could be much more difficult for them, that's a fact, strong teams don't always manage to repeat themselves and achieve their goal next year too and this is something that many teams do and understand, so many players leave to go elsewhere.
After seeing how PSG played their two last finals against Chelsea and Tottenham, I can only conclude that they may not be able to replicate last year's performance this year. It is looking like a lot of the coaches have mastered how to play them and that will definitely affect them in the new season.