Weirdly, as the example of the Zong demonstrates, insuring slaves wasn't actually lucrative for these companies. The assholes who took out such policies also tended to be the type of assholes who killed their own slaves. To make things worse, it's not like great records existed of which slave was which, so policyholders often cashed in when any of their slaves died, whether or not they were the specific person on the insurance form. But the practice still continued right up until the Civil War, with even longstanding insurance companies offering policies until as late as 1856. In 2002, a lawsuit was filed against Aetna, along with other companies, claiming they should pay reparations for their part in slavery. It was dismissed two years later.