Because luck was exactly what Inter lacked last year.
For me last year Inter was not unlucky but the schedule of matches in various competitions put heavier pressure. If last season Napoli also had a schedule at UCL and several other competitions, surely Inter were still able to win the Scudetto last season. Inter get 79 and Napoli only have 59 scores in one season. This difference proves that Inter is still a very good team last year.
I am with you on this point, because if it was Napoli that had the match schedule that Inter Milan had last season, I don’t think they would have been able to reach the points of Inter Milan in the season. Even at that, Inter Milan still had more goals than Napoli, and if I am not mistaken, they only had a point difference between Napoli and Inter Milan. So their performance is still good, and from all indications, they will be even better this season.