Mark Cuban. AP Photo/Alex Brandon Billionaire investor Mark Cuban questioned on Friday why the Drudge Report and Breitbart aren't characterized as "elite media" organizations, noting that the outlets have a larger readership than many traditional newspapers.

Cuban's comments came in reply to a National Review writer who mentioned the "elite media" in a story he wrote.

The "Shark Tank" star asked "who exactly" makes up the group, prompting the author to list The New York Times, The Washington Post, NPR and "leading opinion journals."

Cuban then questioned why prominent conservative outlets weren't included in the list, noting that many have "bigger audiences" than the organizations the author listed.

He pointed to the number of followers Fox News has as an example.

"They are the super elite and I would argue have more influence," Cuban tweeted.

Conservatives have long believed that the top networks and newspapers in the US hold a liberal-leaning bias. As a result, many have turned to talk radio and alternative media sources available on the internet for their news.