Napoli will never allow their points to decrease after the FIFA world cup competition than to apply many strategies that will keep them winning to improve their points till they achieve the Italian league title which is their major goal in this season. I believe, inter will make the match tough for Napoli next year but it will be difficult for them to defeat Napoli because Napoli are well organized in this season to defeat any strong teams to move higher. Even though, Many team will improve higher after the break, but it will be difficult for Inter or Juventus to take the position from Napoli.
Basically there is no guarantee that a team will be better or worse after the break, because any result can still happen. But yes, because before this break we got a great record from Napoli, then at least that's enough to make us confident that Napoli will be able to maintain this good result.
But of course not everyone has the same assessment, especially for those who have a strong love for certain teams. So they will also believe that the team they love will be able to break Napoli's dominance this season.
In fact, if we consider the existing point gap, I personally as a person who has a neutral view, at least I would say that the point gap is quite wide and difficult to overtake.
With these considerations at least it makes me sure that Napoli is safe enough at the top of the Serie A standings, because I'm sure Napoli will be able to maintain good results for other matches later. Unless I still think that Napoli will still be difficult to be consistent, then I also might have a view for Napoli's position which can still be taken over.