Carmine5: It all goes back to the advertisers having the corporate radio owners from the balls like they always have. They believe anyone 55+ and under 18 isn't desirable. Their view is siuce most in that age group are set in their ways with brands and what they buy, it takes multiple attempts to get any results vs the core 25-54 demo in which it only takes one or two attempts at most, so there are no agency buys for that demo thus the station doesn't cater to them...thus no oldies music. They believe most if not only people 55+ listen to 1950s to early 1960s music. Anyone under 18 doesn't matter to advertisers. As long as advertisers are the ones keeping radio free and buying ads to age groups they want, we're not likely to see the 1950s to early 1960s music to make a comeback.
Of course, what you're saying DXM is absolutely true.
This is what makes internet radio such a tasty alternative. Now if only the poor souls who are doing it can make it pay off somehow.