> niche (smaller) audiences, with biased publication.

We could just call them specialized audiences with particular interests, instead of equating the neoliberal centrism of a bunch of collaborating oligarchic publications to lack of bias.

edit: e.g. if all of the publications collaborate to not discuss issues concerning Mexican-Americans, a defector who peels off a large audience by being the only publication that attends to Mexican-American issues would not be an example of "bias" except under extremely normative definitions of "bias."