All of these other teams in the Ligue 1can actually get to contend PSG to the point of winning the league title from them if they put their mind to it and for me such can be achieved through a ling term plan and not coming every season with same stuff and hope to win the team who is dynamic with their team depth and form every season , apart from the money and the financing, PSG puts in the work too so if others are able to nature their team well enough for some period of time, they will be able to at a point win PSG and get the league title.
It's difficult for other teams to challenge PSG dominance, even though they've tried their best by recruiting several players, but the quality is still different. However, there are times when other teams consistently look for PSG weaknesses, always trying new strategies every season, and of course the team must focus on ligue 1. If another team like Marseille, which is currently trying to develop slowly and focus on finding PSG weaknesses, can definitely win the title in ligue 1. Only in this way can a team like Marseille get an injection of funds from investors to build a stronger team.