One major way that these companies do this is by delivering content directly to TV stations with the expectation that the TV station will use the provided video and script to create a segment for their program. A perfect example of this is described in a recent article on The Verge about Amazon using this practice.
The article includes a screenshot of the script Amazon sent out:
As well as a video of 11 different news stations reading from that script:
Together, these demonstrate that this practice, described and criticized by Chomsky and Herman, is alive and well in the age of COVID-19.
h/t to the AV Club