Anyway, PSG have good prospects and PSG will probably be like Bayern Munich in the Bundesliga who won the title in 9 consecutive seasons and if this season they are successful again then it will be the 10th title in a row. PSG haven't achieved that yet, but with the very good development so far it is possible that PSG will achieve such an achievement. But if that happens then maybe we will say Ligue 1 will be boring because it is not competitive but yes, higher achievement we can see their progress in UCL.
PSG already won 7 titles in last 9 seasons that is good enough to say they dominate Ligue 1.
They lost 2 seasons in 2016-2017 and 2020-2021. Others they won all and from their position and difference with other clubs now, I believe they will win it again in this season. It will be their 8 titles in last 10 seasons if they can achieve it.
Ligue 1
Winners (9): 1985–86, 1993–94, 2012–13, 2013–14, 2014–15, 2015–16, 2017–18, 2018–19, 2019–20
Runners-up (9): 1988–89, 1992–93, 1995–96, 1996–97, 1999–2000, 2003–04, 2011–12, 2016–17, 2020–21
PSG history in Wiki