Marketing gets something new off the ground but the public ultimately decides its fate. Doesn't matter if its the 6.5CM, a new bow feature, a "miracle" fabric or a new vacuum cleaner. Marketing cannot defeat the real world value of the new item. If it has merit - marketing will not be needed as word of mouth will take over and sell the product. In the case of the CM, the history of its development was to provide long-range shooters a better cartridge. They apparently succeeded. As an encore, they created a suitable hunting bullet to go with the round and the rest is history - as Mule Deer just chronicled.
Well said Joe.
“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery
