cuz he was fortunate enough to be carried to championships by superior players in his prime therefore he has the "tenure" so to speak, he also conformed for the acceptance of cacs whereas AI stayed true to himself and didnt care about pleasing massa, and also he never was fortunate enough to be surrounded with as much talent in his prime besides young Melo
Due to those circumstances, Kobe had the luxury of swindling the organization he plays for out of a huge contract he wasnt worth based off of what he did in the past which keeps him employed today whereas Iverson wasnt that lucky because the cac media were too busy spreading propaganda about him being a bench player so teams gave him a 1 year contract