Internal communications from OpenAI and Microsoft employees have revealed strong criticisms of AI training practices involving fair use data. According to The Decoder, a Microsoft director labeled this approach as the "largest theft of labor in human history."

Further comments from OpenAI's head of ChatGPT described the resulting products as "largely substitutive, period," highlighting concerns about the impact of AI on original content creators. These candid remarks shed light on internal tensions regarding the ethics of data usage in AI development.

For Japanese investors and market participants, these revelations add another layer to the ongoing debate about AI regulation and intellectual property, which could influence technology sector valuations and policy decisions in the region.