It's quite simple really. RL in France failed to professionalise itself when it needed to whilst it was still extremely in the 1950s-1970s. There have been people who promised to invest in a fully professional competition with all the major markets in France included i.e Paris, Lyon, Toulouse, Bordeaux etc... But all these investors where like the Denver guy, all talk. Our game needs guys who will spend millions of euros in creating a fully professional comp in the France that is how the game will be taken to the next level. It needs private funding there's nothing more FFRXIII and the volunteers on the ground can do to grow the game. They should only be responsible for the grassroots part of the game.
RL in France needs a professional arm and private money to do so
SL is not the solution to make France tier one their player pool is very small. A lot of people use New Zealand as an example with only one NRL side but NZ have much more professional players due to the opportunities in the NRL. Super league is a poison chalice for France all the attention has been moved away from their domestic comp. There's way too many foreign players in the dragons but the dragons don't want to get relegated. Even if Toulouse get promoted I guarantee you they'll bring in more foreigners to say up instead of bringing in through more local talent. But it's really the only opportunity for professional RL they have.
SL isn't the solution but really it's the only concrete opportunity they have
They also need to play more tests but it's understandable why they don't do to costs and not being able to get pro players off duty