I think you shouldn't feel disappointed because Juventus could get 1 point at least. With this draw result, Inter Milan also gets 1 point. So, there is no change in the position and no change in the point gap. In the match today, Juventus seems to be more defensive, they used 5 defenders. Meanwhile Inter Milan played more offensive, they used more midfielders. According to this tactic, we actually can assume that Inter Milan has a bigger chance to win because they play offensively. So, get 1 point isn't a bad thing for Juventus. They are lucky that there are no more goals made by Inter players. In the second half, I think Inter Milan dominated the match.
Getting one point from this match is not best result for both but it is not too bad for them. They did not lose directly to a biggest competitor in this season for Scudetto and more important, this defeat does not make their gaps with clubs like AC Milan and Napoli, other clubs in top four become too much more closely. They still have good gaps with two clubs behind and it is good for their dual race to Scudetto.
Napoli seems to have big challenge from other clubs to have a position in top four. Now they only have 3 points more than AS Roma that stands at the fifth position. Not too far behind are Atalanta and Fiorentina and Napoli must feel serious about their main target in this season. It will help them to use their player resource better. Champions League or Serie A, what they want to prioritize their player resource for is important for rest of this season.