What I find surprising is that employees are still reluctant to name and shame such behavior. Any time any company does any one of the 3 actions you mentioned

What I find surprising is that employees are still reluctant to name and shame such behavior. Any time any company does any one of the 3 actions you mentioned in your post, it should be an automatic name and shame and a large ding to their reputation. I don't think it will be sufficient to curb such behavior entirely, but shining light on it is a good first step.