How would you say that both AC Milan and Juventus getting quality players means nothing? Juventus have gotten six points in two games which shows that they are one of the contenders for the Serie A trophy. They also showed that they have a balanced team since they have scored three goals and have not conceded any. AC Milan might not be at their best in two games since they lost one against the underrated Cremonese. I didn't expect them to lose in the game with Cremonese but La Cremo has proved to be a strong underdog that has the potential of beating any club.
To succeed, there are many conditions from player resources, deep or not, quality or not, and head coach is capable and experienced or not but there are other conditions from other assistant coaches, medical staffs and other staffs in the club that work together in order to have as fullest and best player resource for matches as possible.
AC Milan and Juventus have quality players, that's true but to succeed in this season, they need to have quality coaches and it seems only AC Milan meet this condition with Allegri while Juventus is uncertain with Tudor.
The League is still fresh with each club playing just two games. The new players that have been signed by both sides need some time to blend with the other players. After playing more games, it will be clear that buying quality players is important to all clubs.
No club get a position in top four and a ticket to Champions League next season or a Scudetto after only two first matches in Serie A. Both Juventus and AC Milan have tons of works to do and must do it well in order to finish this season in top four and even win Scudetto.