Re: nothing new here
That was CBS that cancelled all of those shows, not for ideological reasons, but financial ones.
Those shows brought in plenty of eyeballs, but the eyeballs were either too young or, mostly, too old to fall into the demographic they wanted to attract.
And the reason they wanted to attract that demographic was because they could charge more money for ads to advertisers wanting to reach that demographic because, out of the total available pool of advertisers, more of them wanted that demographic, therefore supply and demand.
If the big three carmakers and big food companies and makeup companies and all the others primarily selling to young to early middle aged singles or marrieds with children were competing to buy the ad slot, you could sell it for more than if only a handful of denture cream and laxative companies were.
Could also have gone with pedant, (statistical) boffin, or "that's mine with the copy of Ad Age in the pocket", but "explanation of elementary advertising strategy" works as well.