That's how League 1 is still very uncompetitive because other teams may not be able to get quality players like PSG. Maybe one of the problems is the financial difference between PSG and other teams.
One real proof we can see right now is Marseille bringing in players from the EPL like Mason Greenwood who is currently making a very good contribution. And the change in performance has increased after the player joined Marseille.
Just imagine what it would be like if several other teams were able to bring in professional players like PSG. Surely the competition in League 1 would be more interesting and would be of interest to many football fans.
Finance affects many things in football because with money clubs can buy the players they need so that the competition will be much more interesting. Now what is happening in Ligue 1 is that only PSG has good financial capabilities so they can recruit the players they need and it is difficult for other teams to compete with them if they are in a condition like now which will indeed be limited to player recruitment.
Marseille and Monaco are candidates who may have a little ability to compete with PSG, but they will also struggle to remain consistent in competing because they are not supported by good finances in an effort to recruit the players they need.