According to Business Insider's Ashley Stewart, Microsoft's Copilot AI product has been criticized for not meeting its high expectations. CEO Satya Nadella didn't hold back initially, describing Copilot as something that would "fundamentally transform our relationship with technology" when it was unveiled. But internally and among clients, that doesn't always feel like the case. One Microsoft executive told Ashley that Copilot offers useful results about 10% of the time.