Bob Bakish, the head of a newly combined CBS and Viacom, said the media company has the scale to take on rivals.

In an interview with CNBC's Andrew Ross Sorkin, Bakish cited its content library, which includes 140,000 TV episodes, 36,000 films and 750 series, as enough ammo to fight the likes of Netflix, Disney, Comcast and others entering the TV streaming wars.

The comments came a day after CBS and Viacom announced an agreement to merge, reuniting the two companies after 13 years apart and several attempts at a deal since 2016. The new company will be called ViacomCBS and Bakish will lead the combined entity.

"It really has almost unmatched scale on the content side," Bakish said. "We clearly have scale in content. There's no question the companies are clearly stronger together than they are independently."

Still, Viacom and CBS, which are valued at $11.8 billion and $18.2 billion, respectively, are dwarfed by Disney, which is worth $246.8 billion, and Netflix, which has a market cap of $136.7 billion.