David Letterman blasted his former network home CBS and the 'goons' at Skydance as he speculated that Stephen Colbert's 'Late Show' was canceled for political reasons: 'Bottom feeders.'

David Letterman delivered a fiery rant against CBS and parent company Paramount for cancelling Stephen Colbert’s “Late Show,” calling the decision “gutless” and “pure cowardice” as he labeled his successor a martyr of the network.

The cost of producing late night programs has risen as the media industry has been upended by streaming and shifting consumer habits.