Most people know when they are sick, the symptoms are not the disease. It points to the disease. And some diseases are difficult to diagnose. Most marketers know this when it comes to their physical illness.
But when it comes to their marketing, they prefer to dispense symptomatic treatment.
To be fair to marketers, not all problems felt at the marketing side of things originate from marketing. The pain radiates to marketing, but it could originate from production, management, logistics, even IT.
For some management, as long as the fever is not there, we are OK, seems to be the rule of the day.