I know that salicylic acid with acetic anhydride under acidic conditions gives acetylsalicylic acid (aspirin). But my question is, why is it that post the protonation of carbonyl oxygen of acetic anhydride as mentioned here, the nucleophilic carbonyl oxygen of the the $\ce{-COOH}$ group doesn't attack the delta postive charge on the carbonyl carbon of the protonated carbonyl group?
What makes the phenolic oxygen more nucleophilic than the carbonyl oxygen?