If new quality players are not brought into the club Thiago Motta will not be able to achieve a good result with these current players. Juventus has little financial problem but the management need to sign players to support Motta because he is a good coach and can achieve success for the based on his skills and experience.
Next season will not be a season that Inter will dominate like last season because many clubs are reshuffling their team to strengthen it and make sure that they are in a good form for next season competition.
I also quite agree with what you said because any team at this time has indeed overhauled more players and also their coaches to have a better next season. Especially for a team like Juventus that you mentioned where the team management must think about being able to bring in some new players in order to make the new coach's performance better next season and also be able to break Inter Milan's dominance which was good last season. In addition, Juventus also did not look so bad last season so they must be able to push themselves to be the best through Thiago Motta's coaching.