The fights are often more expensive than the settlements, and these settlements have gone from a rare black mark to being a cost of doing business.[1]
Similar discussions are common in the criminal law, and it is well-known that a large number of people plead guilty to crimes they did not commit; people do this because the costs to themselves and to their families are much higher if they fight the charges than if they just plead guilty.
In the criminal law there is a big difference between accepting a plea bargain, which generally involves the accused allocuting in open court and admitting to wrongdoing, and pleading no contest which is specifically not an admission of guilt, but a pragmatic decision that the costs borne fighting the charge outweigh the benefits.