Well, you just backed from your initial saying "pay". That was a great concern, being "cozy", etc. is not so.
Among countless cases, some uncovered, some unknown: http://www.nytimes.com/2006/09/09/washington/09cuba.html
It's no new either: https://en.wikipedia.org/wiki/Operation_Mockingbird
And not just in news either: https://topdocumentaryfilms.com/hollywood-and-the-pentagon/
that's a different poster.
> being "cozy", etc. is not so
it absolutely is... "access" is a form of currency, sometimes an extremely valued one.
the impact of access is such that the behavior of mainstream journalists can be manipulated toward one's preference through reducing or restricting it (or threatening to do so) - provided there is sufficient value in said access, of course.