since the last few seasons Napoli have always been able to compete at the top of the standings but the problem with this team since the last few seasons is consistency, they often can't be consistent until the end of the season so that they have to lose their best place.
but if you look at the game so far I think it's a different season for them, a lot of changes have happened in this team.
True, Napoli's problem in the end is that they always fail to win the Scudetto. They played well with their best form, but I always found it hard to believe they would be able to win the title because they lost consistency quite a lot in the last half of the season. That's why I believe other teams like Milan, Inter or Juventus will have a good chance at the end of the title when the season is drawing to a close.
and for AS Roma at this time it has indeed developed after being handled by Jose Mourinho, and they have just built a better team therefore of course this takes time especially now that Serie A has developed more competitively, I think it took a long time for AS Roma can return to its former glory.
Roma can get back to their former glory but I think they should invest more in squad depth. So far the players have been good and really shouldn't be underestimated, but of course other teams are still better than them so it's always possible for Roma to drop points in big match.