After a long wait, investors got some clarity on Microsoft's relationship with OpenAI.Microsoft (MSFT 1.45%) began investing in OpenAI in 2019, long before ChatGPT was launched. For years, it was unclear what Microsoft actually owned, how much it had invested in OpenAI, or what that stake was worth. Microsoft said in a statement in 2023 that it doesn't own any portion of OpenAI, but it is entitled to a share of profit distributions. OpenAI had an unusual corporate structure. It was founded as a non-profit a ...