damage control after damage done

question of the week:
why do ppl always do damage control only after damage had been done??

hmm..let me think of an example:
u say sorry to someone before u hit him..and u said sorry after u hit him..

the problem is what the use of damage control when there is already mistrust, disagreemet and morale problem..work performance is already been affected..Can damage control solve all this problem..

How come they dun understand this??