It's like any other issue that initially shocked the nation. Like gang shootings, government corruption, or school ground shootings, after awhile people tend to become desensitized from the initial shock of the incidents and over time, what at first caused a deep sense of horror, eventually leads to a certain degree of acceptance. This lessens the impact on people's emotions.
I see a similar pattern relating to MSM bias although I am unsure as to how this will affect the future of it. My concern is that people may become so conditioned by it that they will become complacent thus allowing them to get away with even more. My hope is that the internet and other alternative media will one day render them obsolete.
As the bias becomes more and more overwhelming, don't you figure at some point there will be a backlash against it. I could see a time when people become offended at being told what to think, as if they are all ignorant.