The FCC and US Department of Justice gave the Comcast-NBC Universal merger the thumbs up this week, yet both media companies have remained quite silent.

Despite the 4-1 vote, many critics and lobbyists have quickly declared their opposition to the merger, some saying it gives one cable entity too much control over the media landscape and freedom of information. And others, even calling it a “media behemoth.”

Though the merger is expected to officially close by the end of the month, it's clear ...