Winning the Italian scudetto is all about consistency, and the best place team right now is inter Milan and Napoli, initially at the beginning of the league, I never thought that Napoli would be able to compete as they are currently doing, I was expecting them to battle it out for a place in the top four, but they have actually exceed my expectations, and they are now competing to win the league title, which is a welcome development to all the Napoli fan out there, though they are currently leading the league chart, but I believe that inter Milan has more in their ranks to wrestle this league title away from this Napoli side.
Then as Atalanta and fiorentina, they are actually very good no doubt, but their greatest challenge and why they can't continue their title push is lack of consistency, just as you have rightfully said, their last five hasn't been good enough for a team that want to be crown champions at the end of the season, so as it's stands now, it's just a two horse race between inter Milan and Napoli.
Juventus was regarded as one of the best team in Italy, they won the scudetto consecutive times and having full domination all round. What happen to the current state of the Old Lady's? I guessed they've fallen from the top and their declined in performance and status gives more rooms for competitive teams to joined and reclaimed this spot. We've seen the likes of Napoli, Inter Milan and AC Milan been crown the scudetto since Bianconeri couldn't comprehend the pressure. This season is new one and we've watch craving elite teams already displaying their fierce ambition towards the scudetto. Looking towards the direction of Napoli and Inter Milan, they wouldn't back out from title race this season. Watching both clubs from afar and I've seen enough determination from these teams. They're eligible for long-term stellar display and winning matches becomes priority.