France has a lot of talent, no one with two eyes and a brain can deny that. But it does not make a strong league if there is mass exodus of them when they are leaving or before they leave their prime. Konate, for example of this thread, and Upamecano are both in Bundesliga. Brazil factory is even more impressive but you won't see anyone say Brasileiro is a top league globally. The exodus stops that from developing. Meanwhile don't usually get this with young Spanish and Italian players. There are exceptions like Cesc before, Fabian Ruiz now of course.
In regards to being a farmers league, of course it is not. No one here believes that, it is just a comeback banter with the OTT PSG posters. But today it is not on the level of LaLiga, EPL, Bundesliga or Italian. There is no consistent European success outside of PSG really. You may say that Marseille made the Europa League final last year, but that was Frances first appearance in that competition since 2004. During that time Spain has dominated the second tier competition with multiple clubs (Valencia, Sevilla, Atletico, Athletic, Espanyol).
The level of PSG is currently an anomaly no different to how Shakhtar Donetsk are in Ukraine with bigger backing or how Zenit St Petersburg were before FFP crushed the acquisition potential of the Russian league.
French league signed an incredible TV rights deal from, ironically, Barcelona's Spanish (OK Chinese funded now like PSG is Qatari funded) broadcaster Mediapro. This distributed equitably should guarantee more French talents stay in Ligue1 longer, with a knock-on being clubs able to demand higher transfer fee's for exiting talents to bigger leagues like Premier League and LaLiga. Lille demanding 70m for Pepe, Lyon putting the asking price for Ndombele at 70m are two examples. We will see how this develops, whether clubs will now fill their pockets with higher profits or look to re-invest in their internal quality and thus product.
But this is only domestic rights and the league has a long way to go to be marketable internationally. The language is a barrier, the visual product is lacking, the clubs outside of PSG lack international exposure and brand value. All these things are needed to expand the league financially for global sponsorship, right sales, growth and keeping talent internally while attracting marquee talent. PSG can't do it alone as the rest of Ligue1 haven't built an international identity and they lack an domestic rival. Monaco are more of a plastic club than PSG with zero fanbase, and now no financial backing. Lyon could be it with the new wave of money as they were 15 years ago but their model is not new and the young players that used to go to Lyon now go to EPL, Bundesliga and Spain.
But PSG is the catalyst. Let's see how it goes.