All of these teams have had impressive statistics recently. Especially Lille have been winning for 5 matches and Monaco have been winning for 6 matches. For 8 seasons, PSG dominated the league with 7 championships and Monaco became the champions once. So, it wouldn't be bad to see a different team being the champions this time.
@Iranus no one wants to see PSG win the title this year, and since Pochettino has yet not won a title this may be a golden opportunity for all other teams to keep the pressure up and ultimately prevail over PSG.
Furthermore Neymar is injured and his absence could hurt them, however it’s yet not known for how long will he be out injured.
Sources:
https://scroll.in/field/944376/data-check-what-the-numbers-say-about-mauricio-pochettinos-tenure-at-tottenham-hotspur
https://www.mirror.co.uk/sport/football/news/mauricio-pochettino-psg-neymar-injury-23484729