The points gap that is still close together like this, of coure will certainly be very interesting for the struggle for 1 position in the top four. Because ya, teams like Atalanta, AS Roma, Fiorentina, Lazio and Napoli at this moment have at least the same quality and chance to be in the top four.
They look to be similar with small differences in total points they have and rankings but their depth of player resources are different a lot. I believe in this crowded and tough race, in next months of season, it will show effects and a team with deeper player resource might be a winner in this race among some clubs.
But even so, I think Atalanta will also still be able to work well to be able to maintain its position in the top four . But indeed, if I remember the previous seasons, the reality is that Atalanta always failed to be able to maintain their good position and will only end in the middle of the standings. So ya, it is interesting to look forward to, whether Atalanta will succeed or will still to fail like previous seasons.
Atalanta lost some best players and this season is not different than recent seasons becasue Atalanta is not too weak but is not strong enough to be in top four. They don't have enough stability and good matches in a season compare to other competitors to win the race at the end.
I have more belief on Napoli, not Atalanta because Napoli have better squad and they can come back anytime.