There is already a precedent for this suit. IIRC, a Massachusetts girl was found guilt of encouraging someone to kill himself. IIRC, she went to jail.

So, since companies are people and a precedent exists. The outcome should be in favor of the guy's family. Plus ChatGPT should face even more sever penalties.

But this being the US, the very rich and Corporations are judged by different and much milder legal criteria.