The other thing to note is that journalism in the US has gotten really lazy. A lot of the articles you will see in the MSM are based on leaked info and press-releases from PR firms, etc. It's easier to for journalists to regurgitate stories hand-fed to them than doing truly hard and costly investigative work.
I think it's less laziness than the fact that the news media has been in a constant state of disruption since the internet. It's a much riskier business than it used to be.