So where does KRTH get the audience for its revised format?
Gosh knows Los Angeles just doesn't seem like the market for a station for nostalgic gringos: someone who was 21 in 1983 is 51 today so all this talk about 80's music doesn't sound like something that will bring in loads of young blood.
This is more than "nostalgic gringos" in that the demographic changes in the market have influenced the music in the market for decades. Most people went with the flow, because that is what radio and other music media accustomed them to.
A few people remain who want Beach Boys and Jan & Dean and that kind of "oldies". Most people in the market have moved on, or, at least, don't miss hearing that kind of music on the radio (beyond the age issue).