Radio has no such obsession. Radio focuses on formats that appeal to persons between 18 and 54 years of age, because essentially all ad buys come down for different segments of that broad adult demo.
If there were buys for 55-64, there would be stations focusing on that age group. If there were teen buys, there would be teen stations.
WNOW, WPLJ, WHTZ, WKTU, sure sound like teen stations to me---- with childish jocks & chilldish music. But I
guess they count on childish listeners in their 20's & 30's too.