The once-thriving partnership between Microsoft and OpenAI is showing signs of strain as both companies seek to gain more control over their shared AI future. What began as a close alliance in the AI age is now turning into a complex, high-stakes relationship as both companies pursue their own ambitions in the increasingly competitive arena.How it all startedThe partnership took root in 2018, after a chance meeting between Microsoft CEO Satya Nadella and OpenAI’s Sam Altman, when OpenAI was still a non-profit organisation, according to The Wall…