This certainly doesn't mean most marketing is useless, but it's a telling statistic about the divide that separates marketing messages that operate at 30,000 feet from sales conversations that happen at 3 feet — the average distance between a salesperson and a prospect during a sit-down meeting.
In this digital age, it's increasingly important for marketing to play a bigger role in helping sales not just get "your" message in front of a customer, but to make it "their" message — something that the buyer cares enough about to talk to your rep and to do something that upsets the status quo as a result. It's about creating content that can play dual roles: attracting and educating buyers while giving sales a deeper understanding about what's attracting that attention in the first place. To achieve both, marketers have to understand their buyers. Better. Deeply. Obsessively.