I never believed Napoli would win the Scudetto, but Napoli surprised everyone and won the Scudetto. Yes, some clubs have changed their coach, but they don't have a good squad depth to compete for the Scudetto next season. I believe Inter Milan and Napoli still remain the favourite teams to win the Scudetto next season, and it won't be a surprise if either Inter Milan or Napoli wins the Scudetto next season.
Napoli won the Seria A title because Inter Milan suffered a surprised drop in form towards the end of the season. Inter lost some points which made Antonio Conte side win the Scudetto with one point. Predicting the winner of the title next season might be difficult considering that Napoli finished in tenth position last two sessions but they become champions. So clubs like AC Milan and Juventus cannot be underated.
Inter Milan dropping form towards the end of the Serie A season played a role for Napoli to win the Scudetto, but we shouldn't forget that Antonio Conte was the brain behind Napoli winning the Scudetto. In my opinion, AC Milan and Juventus will perform well next season, but I don't think they have a good squad depth that will help them to win the Scudetto next season, so I still maintain that either Napoli or Inter Milan will win the Scudetto next season.
So far Conte is still the manager of Napoli they'll still do well this season I'm not very sure if they'll still win the Scudetto again this season but they'll finish in the top 4. Let's not right off Ac Milan and Juventus those team night take everyone by suprise Ac Milan especially they made good signing this season.