It ends when all news is just parroting Fox News. They will trade their legitimacy for WH access and fear of lawsuits and there will be no point watching or reading them anymore.
Unfortunately they won't care. By the time you can explain they're 5 scandals along. Trump just has to scream bloody murder about something else every day. Reality is irrelevant.
Where it ends is a highly politicized FCC doing "investigations" into traditional media and levying massive fines intended to drag the companies to the ground.