Keep in mind that “they” isn’t 3 organizations and 3 brains.
It’s tens of thousands of people just like you and me that get hired and work there.
There is no FBI background check and contract signed at the date of hire saying you promise to tell lies and obey government instructions.
And even if that was the case, why are news networks so polar on issues all the time? Shouldn’t they be selling one dictated message down to us?
The theory of media being “in on this conspiracy” is just false or they would always be selling us the same message.
In Russia there was a government controlled newspaper under the title of “Truth” and it was very clear of what their message always was and all the articles always seemed to have the same tone, no matter what agency or news network. That’s what the real government owned news are like.