Replying to @alextcone and @pdolanjski, @ashk4n, @RonWyden, @iab, @globalprivctrl
Most browsers are meant to be PbD tools and have a claim to GPC by default (Chrome would be a harder case, but it might). GPC by default is best for publishers, users, and legit ad businesses. But if that's abused downstream to prevent competition, comp authorities should look.
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