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.
The world cup would affect most clubs either negatively or positively. Some teams might miss the services of some key players due to injury, while other players might improve after the world cup. It could also be an avenue to identify and sign new quality players. But from all indications, Napoli might win the Italian league title. This is because all their players are still intact and non suffered any injury during the world cup. Mathías Olivera, Hirving Lozano, Piotr Zieliński and others that left for the world cup came back uninjured which means that the Italian side would be with its full squad. If Napoli continue with their winning strides like they did in the first half of the league, teams like Inter or Juventus would find it very difficult to unseat them at the top. I expect Victor Osimhen to pick up very fast after this long break and start scoring more goals for Napoli.