 During the early years of television , there was some measure of cooperation among the four major U.S. television networks . However , as television grew into a profitable business , an intense rivalry developed between the networks , just as it had in radio . NBC and CBS competed fiercely for viewers and advertising dollars , a contest neither underfunded DuMont nor ABC could hope to win . According to author Dennis Mazzocco , " NBC tried to make an arrangement with ABC and CBS to destroy the DuMont network . " The plan was for NBC and CBS to exclusively offer ABC their most popular series after they had aired on the bigger networks . ABC would become a network of re @-@ runs , but DuMont would be shut out . ABC president Leonard Goldenson rejected NBC executive David Sarnoff 's proposal , but " did not report it to the Justice Department " . 
 During the early years of television , <a href='dey_it' title='1'><mark>there</mark></a> was some measure of cooperation among the four major U.S. television networks . However , as television grew into a profitable business , an intense rivalry developed between the networks , just as it had in radio . NBC and CBS competed fiercely for viewers and advertising dollars , a contest neither underfunded DuMont nor ABC could hope to win . According to author Dennis Mazzocco , " NBC tried to make an arrangement with ABC and CBS to destroy the DuMont network . " The plan was for NBC and CBS to exclusively offer ABC their most popular series after they <a href='been_done' title='2'><mark>had</mark></a> aired on the bigger networks . ABC would become a network of re @-@ runs , but DuMont would be shut out . ABC president Leonard Goldenson rejected NBC executive David Sarnoff <a href='null_genetive' title='3'><mark>'s</mark></a>proposal , but " did not report it to the Justice Department " . 
Durin da early yrs of television , it was sum measure of cooperation among the four major U.S. television networks . However , as television grew into a profitable bizness , an intense rivalry developed between the networks , just as it had in radio . NBC and CBS competed fiercely for viewers and advertising dollars , a contest neither underfunded DuMont nor ABC could hope to win . According to author Dennis Mazzocco , " NBC tried to make an arrangement with ABC and CBS to destroy the DuMont network . " Tdaplan was for NBC and CBS to exclusively offer ABC their most popular series after they done aired on thdaigger networks . ABC would become a network of re @-@ runs , but DuMont would b shut out . ABC president Leonard Goldenson rejected NBC executive David Sarnoff  proposal , but " did not report it to thedastice Department " .