Because Fox News is stable, banal, they play the respectability card. Internet users on the other hand can be fucking volatile. Advertisers don't care how hot t

Because Fox News is stable, banal, they play the respectability card. Internet users on the other hand can be fucking volatile. Advertisers don't care how hot the takes are on cable news, they just want to sell shit to the elderly, they do care if their ads are placed around overt fascists because that's where their association attracts bad press. Same thing that happened to Youtube in 2017. People gave a bunch of large brands bad mainstream press because their ads played on fringe/conspiratorial/violent content and they, responding to the bad press they receivdd specifically, gave Youtube a heavy ultimatum about keeping ads off that sort of content before they abandon the platform. The rest is history.