Here is my 2016 post on the decline and virtual death of KGO:
Here is another comment from the allaccess.com site which supports your point of view:
"The KGO issue with PPM was more than just the detection technology. The issue was that talk listeners wrote in large chunks of the day in their diary entries while the real PPM listening was for shorter intervals with many interruptions. So between the last diary books in 2008 and an average of the first currency PPM books, KGO plummeted from 8th in 25-54 to below #20.
PPM came to San Francisco well before the oft-blamed Citadel deal. KGO, already on a considerable slide in the sales demos, was massacred by the PPM. From the year 2000 when KGO had a number one ranked 5.0 share in 25-54 in the Spring book to mid-2010 when the station averaged 20th in the same demo with around a 2.4 share, the station had been on a decline for a decade. The PPM simply pushed it over the edge of the cliff."
Here is another comment from the allaccess.com site which supports your point of view:
"The KGO issue with PPM was more than just the detection technology. The issue was that talk listeners wrote in large chunks of the day in their diary entries while the real PPM listening was for shorter intervals with many interruptions. So between the last diary books in 2008 and an average of the first currency PPM books, KGO plummeted from 8th in 25-54 to below #20.
PPM came to San Francisco well before the oft-blamed Citadel deal. KGO, already on a considerable slide in the sales demos, was massacred by the PPM. From the year 2000 when KGO had a number one ranked 5.0 share in 25-54 in the Spring book to mid-2010 when the station averaged 20th in the same demo with around a 2.4 share, the station had been on a decline for a decade. The PPM simply pushed it over the edge of the cliff."