If you're wondering why Comedy Central isn't putting up a fight over losing its "Colbert Report" host, there's a simple explanation: Both networks are owned by parent company Viacom.
While Comedy Central's other big name Jon Stewart was considered a possibility to replace the "Late Show" host, he more or less told New York Magazine it wasn't the position for him.
Viacom is a global mass media company that also controls MTV, Paramount Pictures, VH1, and BET.
It is the fourth-largest media conglomerate behind The Walt Disney Company, Time Warner, and 21st Century Fox.