Which format is sinking faster, Classic Rock on WNNX or Rap/Hip Hop on V-103? Kiss 104.1 is spanking WVEE's butt! Does anybody over 25 listen to rap any more? Many rap artist debut big at Billboard (#7 or higher, 8 tracks in the Hot 100) then 6 weeks later their massive debut album is at #94. Tired, tired, tired..... and so is Billboard!
"Rap" is such an old school term. Most everyone now designates that music as "hip hop" and has for the better part of two decades.
The rap and rhythmic pop segments are the primary sales vehicles in the music industry. By far.
Among Hispanics, it's reggaeton, a rhythmic derivative of Caribbean genres and the original rap and hip hop sounds.
The reason hip hop releases have a short chart life is that the this segment of the industry has moved from the "album" to releases every 6 to 8 weeks... I have even seen 4 to 5 week intervals as well. The idea is to benefit from constant playing of the latest song. Of course, big, big hits will endure and occasionally not be followed up for several months. Album sales are not the driver here... it is individual song play at on-demand and streaming services.
Just look at the most viewed song on Youtube: a reggaeton song that has about 7 billion views and is now several years old.
Oh, and all Billboard does is report the streaming, sales and airplay activity. It does not make or break the hits.
As to ratings rank, if you are basing your judgement on the last two PPM books, that is absurd. Every station was off, every market was down in AQH listening levels (PUR or "persons using radio") by 30% to 50% compared to February. There is nothing "durable" or of any ongoing significance to be seen in these last two reports.