Yes, as we are talking about this season, the one that dominates the top of the French League is PSG. There is no other team that can beat PSG at the top of the French League standings, even though they are at the bottom followed by Monaco and Marseille, they also cannot catch up with the points that PSG has collected. There is high hope that PSG will to become champion in the French League at the end of the season.
I agree with you that only the French League and Domestic League can be achieved by PSG, whereas in the European League it seems to be a burden with big teams from all leagues so PSG's steps to qualify for the next round I doubt it.
In the Champions League, it is still appropriate to doubt PSG this season because PSG's performance there is still far from satisfactory. But in Ligue 1, it is quite clear that PSG is still very strong compared to other candidates, only a team as big as PSG should be able to get something more because trophies like Ligue 1 are very common for them every season. So PSG must be able to improve themselves outside Ligue 1 so that the team is not underestimated by rivals from other Leagues when playing in competitions like the Champions League.
7 points is the gap created by Paris Saint Germain as the leader of the standings with the club in second place which is currently occupied by Marseille. 7 points is quite a distance because Paris Saint Germain is leading, so in my opinion that distance is quite comfortable for them. With all the inconsistencies that occur in other clubs in Ligue 1, I am not sure there is a club that can catch up. The possibility is still there, but the possibility is very small in my opinion. This also requires great luck, because after all it is very difficult to catch up with a superior club like Paris Saint Germain.