Microsoft Shares Slip as AI-Generated Answers Raise Copyright Concerns

Microsoft's shares slipped approximately 0.8% to $493.84 on Friday after news organizations unsealed parts of their summary-judgment filing in a lawsuit testing whether AI-generated answers undermine Microsoft's transformative-use defense.

The publishers are focusing on testimony from Microsoft and OpenAI executives, arguing that AI-generated responses can reduce the need for readers to visit original news sites. However, Microsoft claims those comments reflect individual views rather than settling the question of fair use.

This distinction matters as the court has not ruled on the publishers' allegations, leaving the central copyright question very much alive. For investors, the real pressure point is the economics behind Copilot and AI search, which could lead to higher content costs or changes in how Microsoft's products surface information if courts decide that answer engines erode publishers' traffic or licensing value.