Z said "It also indicates lack of good product and adult numbers driving the format."

OR is it the fact that 2 or 3 companies (all cash strapped) control so much. There are stations here and there that have their own MD's or PD's, er, Brand Managers, and there's quite a different product than on let's say CC, Audacy, Cumulus, Townsquare....

In the past, and this is ancient history now, 1974, charts went from 30 to 16/17 songs. KCBQ WOKY WDRQ were examples, and songs stayed on for LONG times, but when one has so few controlling the product....