Conte is top manager proven by his success with Chelsea and now Napoli. Without full transfer support he is still improved Napoli. Osimhen absence would have helped but Lukaku has done well. Inter abd Juventus and AC Milan will challenge for title. Standings are too close to predict winner. But Napoli has edge focusing only on domestic games while others play in Europe.
Conte experience and domestic focus will be vital. If Napoli uses this advantage they can win the title.
Yes, if you look at the minimal transfer activity, it seems difficult to lift the team to the competitive path, but Conte was able to do that and so far Napoli has been able to perform quite well and is at the top of the standings. Conte's presence back in Serie A certainly makes the competition more exciting, he is an influential figure and has a good reputation and of course his presence is a challenge for other coaches. Currently the competition in the standings looks very tight, Napoli is certainly not safe because several teams below it could also change positions, so Serie-A this season will be very competitive.