This link is also reblog spam from a BusinessInsider reblog spam from some other "frugaldad" (FRUGALDAD sounds like a legitimate source of media conglomeration news, doesn't it?) site from 2011, and even BI stated it was inaccurate and outdated back then making it even more so now in 2017.
http://www.businessinsider.com/these-6-corporations-control-...
As for the inaccurate info... for starters....
https://en.wikipedia.org/wiki/Acquisition_of_NBC_Universal_b...
https://en.wikipedia.org/wiki/NBCUniversal
Anyway. Nobody bothering to check on this stuff, even in a highly intelligent community like HN, is a great example of how inaccurate or untruthful garbage spreads online.