Juventus is indeed a tough competitor for Inter Milan this season to win the Serie A title, Napoli themselves are much different from last season after changing coaches and will certainly not be able to defend the Serie A title this season. In fact, I think Napoli will have difficulty reaching the top five positions, because from 10th to 4th place, the points are very close to each other so the competition will be even tighter.
Juventus still has a chance to win the Serie A title. They are only 1 point apart and Inter still has 1 match remaining. But that remaining game is against Juventus and I think it will really be a deciding game. If Inter Milan wins then it will be finished. And if Juventus wins then their chance is still there because Juventus is only 1 point behind with Inter winning their 23rd match. This is really interesting and I like this kind of rivalry.