What happened with PSG and Chelsea has nothing to do with the league itself, it will not make PSG crumble or change, they will get the league title again. What it could do maybe impact UCL for PSG , because whatever happened there, could be something they should be caring about during the UCL period, if Chelsea figured out a way to beat PSG then it would mean they could do it again, and other teams could fix it too.
But when it comes to Ligue 1, there are no teams that can beat PSG, and the league will be won by them with ease yet again. It's boring I know, I mean who would want to see the same team win it over and over again, makes it very boring, but do we have any other alternatives? Like what are we suppose to do? Just kick them out of the league? They are rich and they are strong, so they win, it is not their job to level it out, it's other teams job to get as good or at least as rich.
In football there are sometimes that loses are bound to happen and despite the fact that PSG lost that game go Chelsea doesn't necessarily mean that they will be lose in their game in league 1 because with the quality and standard of that team I don't think any other team can actually challenge them for the league 1 title because they will be winners at the end of the season again and besides lille and Monaco aren't actually big team to give PSG headache.