Someone else develops anxiety and sees a therapist. Another co-worker may simply leave the company. This will cost time and money in advertising, interviewing and training, to say nothing of adding to the load of the other employees. And remember, if filed, lawsuits are expensive. The office bully is the hidden cost of someone's not paying attention.
Some managers adopt that motto as their management style.
Others may actually be aware of the office bully's behavior and ignore it because the bully gets things done, and the manager supports that at any cost. In either situation, ignoring this problem is a sure fire way to float down the river of denial in the belief that those white water rapids ahead are as peaceful and calm as a child's wading pool. People problems left unaddressed grow in direct proportion to any and all attempts to ignore them. That's a law of human nature. First, take a breath.