I am not sure why people keep thinking that ad agencies like the 25 to 54 demo. Ad agencies are a small part of radio revenue. The older demo 35 plus is the demo that the big money comes from. This is WBEN's demo. Yes, that is a broad age group, and many of the people in that demo will be 45-70. But I will sell to that demo than 18-45 demo any day of the week. That age group has grown up with radio. They are going to stay with radio, and understand it a lot better than millennials. Just my thought
You forget that in larger rated markets, agency revenue is critical to a major station being profitable.
For Buffalo, the percentage of national business is about 42%. For the major stations, it is likely as much as 60%. And, of the remainder, a big chunk is local agency placement.
So if you are one of the full signal FM's or one of the two significant AM stations, the "big money" comes from agency buys or buys done by in-house agencies that use ratings. And those buys are essentially against some part of 18-54. And that money is just as much against 18-34 as it is against 35-54; three of the top 5 billers are Country, Hot AC and CHR.