The Serie A is really good like this by seeing different teams becoming the title winner every season. Inter, Milan and now it is most likely to see Napoli. After this season who knows what team will make it to the league title. It is good that we have started to be really wondering about how a season will end in this league. Because it was such a boring time period back then while Juventus were dominating the league with many championships. I think it is not nice to guess the future champion easily in a league.
Thankfully there is no team dominating the league for years at least for now. I don't even think Inter, Milan or Napoli have the strength to become champions many times in a row now either. We would continue to see a big challenge and Juventus would try to join them again.
It is things like this that make the League more interesting to watch, yes it is a competitive league and it is not only placing one team that can win the title from season to season. Serie A has improved in recent years, even their rivalry has to be until the last game in the league. Like last season, for example, where the title must be determined from the last match between AC Milan and Inter Milan.
Napoli are the candidates who have the biggest chance this season, they already have a fair distance of points from AC Milan, they just have to continue playing consistently.