Bob Greene : Businesses exist to make profit . But would airlines stoop to charging for carry-ons ? At least one small carrier does , he says . Such a business move insults customers . He says Chicago bank once charged $ 3 to bank with a teller . Comment: Greene : For exasperated public , `` We do n't charge you to carry your bag '' can seem a bargain .
Bob Greene : Businesses exist to make profit . But would airlines stoop to charging for carry-ons ? At least one small carrier does , he says . Such a business move insults customers . He says Chicago bank once charged $ 3 to bank with a teller . They had to drop fee . Greene : For exasperated public , `` We do n't charge you to carry your bag '' can seem a bargain .