Yes "really". The Telecommunications Act of 1996 stripped pretty much every monopoly and duopoly regulation. Before a company couldn't own more than a radio station, TV station, and newspaper in a media market. It's the law that allows for a Clear Channel to own over 800 radio stations (down a bit from it's peak of 1200 a decade ago). It lets CBS own 5 radio station and a TV station in some markets.
What Moyers is talking about is a further
relaxing of the rules.