Wall Street analysts see Microsoft Corporation's (NASDAQ:MSFT) restructured partnership with OpenAI as a milestone in its artificial intelligence strategy.Both Goldman Sachs' Kash Rangan and Bank of America's Brad Sills reiterated Buy ratings, saying the amended agreement strengthens Microsoft's AI infrastructure leadership and sets up years of cloud-driven growth.The deal gives Microsoft a 27% diluted stake in OpenAI Group PBC (valued at about $135 billion) and extends its intellectual property rights thro ...