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Amazon will train on Twitch streamers’ content by default, unless they opt out
Twitch's own CPO admitted the quiet part: opt-in would kill participation, so the default gets flipped to capture data at scale. This is the standard playbook for platforms sitting on troves of creator content, and it will spread to every platform with user-generated video or audio it can monetize for training. For builders sourcing training data, watch for a wave of similar policy changes and the lawsuits that follow.