Pity OpenAI’s lawyers. On February 29th Elon Musk added yet another problem to their list by suing the maker of ChatGPT, a wildly popular artificial-intelligence (AI) chatbot, for breach of contract. The lawsuit argues that the startup was originally set up as a non-profit with the aim of building AI for the “benefit of humanity”, but has since established a profit-making subsidiary and accepted a large investment from Microsoft, a tech…