Microsoft’s (MS’s) reported plan to invest $10 billion in OpenAI, the non-profit that created the ChatGPT app, has sent Wall Street into a frenzy of speculation about the contours of the deal and the ways in which it could alter business computing. If MS does indeed “get” OpenAI, it would apparently be part of a very complicated deal. Under the reported terms, MS would be entitled to 75 per cent of OpenAI’s future profits until it recoups its initial investment. After that threshold, it would retain a 49 per cent stake in OpenAI. Other investors who enter with MS would