We are still in the beginning of the season and even if Milan will lose the next game vs Inter, they can catch up the others in case they keep winning of course later.
Lazio dropped 2 points, Fiorentina lost, Napoli is still 1-1 after 60 minutes vs Lecce, while Juve is leading with 1 goal. So far Roma is leading the table.
it's true, we're still at the start of the season and it's too far to say Milan are incompetent this season. But, what I mean is, Milan have the same problem every season. i.e. often losing or draw when meet teams that they should be able to beat. This is like a culture for AC Milan that must be changed immediately.
inconsistency is indeed a homework for Pioli at this time, in the mirror last season Milan also experienced the same thing even they often lost points in important matches, now Milan have just won 2 games and 2 draws and of course this is not a good result considering they have just met a team that is below their level, dropping points with a smaller team will definitely make it difficult for them to maintain the scudetto this season.