"Each week the program directors review national sales data and Billboard's charts. Focus groups are regularly assembled and phone polls are taken. Is a tune familiar enough? Do people like it? Are they tired of it? Each track is assigned a "burn" score, a measure of how "burned out" the target audience has become; when the score passes a certain level, the tune disappears."

Apparently their scoring system is broken, among other things. Revenue keeps dropping. The size of the market keeps dropping. And yet they keep tightening the screws using the same broken formulas that caused the previous decline. They obviously don't understand the cause and effect here. They see bankruptcy looming and out of fear they tighten the screws some more, causing more fallout. There is no hope for them. They'll go out of business eventually.

Why Radio Sucks (washingtonpost.com)