Sure, the mere fact that the news is no longer news, is old news. But how and why it is happening is big and un-reported news.
When six companies control 90% of the news outlets, that is unprecedented concentration and loss of the diverse viewpoints necessary for a robust society.
When those corporations which normally sell-off any lossmaking division instead hold loss-making 'news' divisions in a now-chronically lossmaking industry, the payoff is not some potential future profits; the payoff is in influencing public opinion to favor policies advantageous to your larger corporation.
So, of course the how and why it is happening is unreported by the organizations that are making it happen.
This isn’t wrong but let me put a finer point on it: when BigCompany Inc starts dumping sludge into your town’s lake, you need independent journalists to figure that out. Corporate talking heads aren’t going to do that. And certainly not the people running a link farm.
What news is reported is as important as whether the facts are true. The easiest path to propaganda is to simply report other, more convenient, facts.
