Mark said:
A lot of times ads are sold in market blocks.
For instance, an ad company might buy time in the top ten markets only.
This is important, because there may be little difference between the actual numbers in the tenth market and the eleventh market.
But if ad agencies are going to cut off the eleventh market, it will hurt number 11.
So you can see if the market is small enough, say under #100 ad agencies may not be interested at all. It is by taking all these under #100 markets together that they can be sold as one.
Markets #101-210 together have about the same number of viewers as #1-3 (NY, LA, Chicago) combined - about 15% of the total.
But how many advertisers court the small towns? Makers of pickup trucks, farm equipment, Blue Bell ice cream, and maybe a few others, but not many in comparison to those who actively seek the young, affluent, urban/suburban folks in and near the big cities - especially those on the coasts. The only important markets in Flyover Country are Chicago, Dallas/Ft. Worth, Houston, and Atlanta since they are in the Top 10.
It goes back in the early '70s, when shows like The Beverly Hillbillies, Green Acres, Ed Sullivan, and Lawrence Welk were cancelled due to being too old- and rural-oriented. From what I remember from those days, the advertisers and their agencies didn't care about that audience. They wanted young, wealthy, and hip, not old, poor, and decrepit. That wasn't and isn't exactly true (I'm sure there are/were some young millionaires in Grand Junction, Wausau, and Bangor), but perception is reality.
That's why I've said for years - and I hope I'm wrong - that NBC and Fox will be the first networks to throw in the small-market OTA sponge. This isn't the 1960s or earlier. It's not important that their programming "plays in Peoria" - it has to play in midtown Manhattan, and Beverly Hills. The national advertisers and their agencies don't care about Peoria. Peoria's along for the ride.
At least, this is the impression that I've gotten during my adult life (almost 40 years), based on watching, reading, and having the occasional conversations with advertising-agency folks that I ran into during my years in Chicago. I haven't seen anything to make me change my mind, although I really hope to.