Before the current drama: >Microsoft owned 49% of the for-profit part of OpenAI. >OpenAI's training, inference, and all other infrastructure were running enti

Before the current drama: >Microsoft owned 49% of the for-profit part of OpenAI. >OpenAI's training, inference, and all other infrastructure were running entirely on Azure credits. >Microsoft/Azure were the only ones offering OpenAI's models/APIs with a business-friendly SLA, uptime/stability, and the option to host them in Azure data centers outside the US. OpenAI is already Microsoft.