Ligue 1 has never been difficult for them. They struggled mightily to achieve success in the Champions League, but they successfully completed it this year. The French league isn't difficult for them anyway, and they have a squad far above the league's quality. PSG has long dominated a challenging French league, and their financial situation demonstrates this. If they can achieve similar performance in the UCL next year, they could become a legendary team.
It has been their biggest dream ever to win the champions league and all along they have been putting in the needed efforts to get the trophy until last season when it eventually became a reality which from they drew so much confidence that after winning the trophy they became almost unstoppable in the next tournament they played where the got stopped in the finals by the blues from London.the French Ligue 1 for them feels like a conquered territory such that at a time, the excitement is not much as when they won a major trophy like the champions league.