Could this be the end of Napoli dominating the league this season or they will still bounce back to the first position. I know that Inter will do their possible best to make sure that they don't come down from the first position in order for them to win the league. However, they need to be careful because one point is easy to overtake.
It cannot be said as the end of dominance because Napoli still has a big chance to overtake Inter Milan again because they are only 1 point apart so there will continue to be changes in the hunt for the top of the standings, Napoli's performance lately has indeed weakened a little but sooner or later it will rise again when Inter focuses on the UCL match and of course Inter will do a lot of rotation and that's where Napoli's chance is to take advantage of the situation to achieve consecutive wins.
With this poor performance in this stage or you forget that the end of the tournament is very close and if they lose again like two times in their remaining games, it will make them not to be close to 3rd position till the end of the tournament. I believe you saw what Como did to Napoli in their home last game to make sure they lose against Como to reduced their points.
And you believe that inter Milan will miss this trophy, I don't think so because they have boost their performance recently to make sure nothing will reduce their points, so that they will be able to lift this trophy again.