The attached article will cue you in to a 1941 dust-up between the FCC (Federal Communications Commission) and the biggest radio broadcasters in America.
Apparently CBS, NBC and the Mutual Broadcasting System were in cahoots, united behind a scheme to fix the prices they had to cough-up in order to pay all the various assorted musicians and acting talents they needed to hire if they were to attract their radio audiences. The feds got wind of the plan and smelled a rat:
"The big radio networks are currently worried by the Federal Communication Commission's accusation that they are talent monopolists, part of the FCC's blanket charge that the radio chains constitute a trust within the broadcasting industry..."