The french authorities do not give a damn about PSG, the city of Paris barely care about PSG to the point where it's been a constant battle between QSI and the city of Paris to get anything regarding the Parc des Princes. The city of Paris don't need, has never needed and will never need PSG when it comes to its image, in fact historically the opposite is true with the city of Paris not liking the fact that PSG used its name and symbols while not actually being a club from the 75(Paris) but from Saint-Germain-en-Laye and has used the fame of Paris to its advantage.
Also Ligue 1 isn't dead or at least no more than it was in before 2012.