Digital and mobile made one slice of marketing measurable for the first time. Impressions, clicks, conversions, a customer journey you could follow all the way to the purchase. Free tools measured that slice and multiplied it, and a generation of marketers trained on those tools until the measurable slice looked like the whole job.
From there the loop ran on its own. The slice was the easiest thing to trust, teach, hire for, promote, and defend in a budget meeting, and each turn pinched the neck a little tighter. I call that the Sliver Cycle. None of it felt like shrinking. The work got busier and the dashboards got better, while brand, buyer psychology, category strategy, and the commercial floor underneath all of it stopped being anyone's job to defend.
The narrowing turns up in other people's numbers, not just mine.
65→40%
CEOs calling marketing a profit center, in a single year.
9.0%
Marketing's share of company revenue, with spend growth at 1.7%, the weakest in years.
David C. Baker, reading the same CEO study: the modern CMO is winning the relationship and losing the argument.
Boathouse, Fifth Annual CEO Study, January 2026 (n = 150 CEOs). Christine Moorman, The CMO Survey, Duke Fuqua / AMA / Deloitte, January 2026 (n = 308).
What that leaves is depth with nothing above or below it. An hourglass with the bulbs cut away. The market sits above your work, the commercial reality sits below it, and the join in the middle is where knowing turns into deciding. The Sliver is that join pinched shut.
This book is for the marketer who came up running one channel and got handed the whole function. You already have the seat. What you don't have is the influence, and knowing the evidence isn't enough to earn it, because the room is rational: it trusts what it can audit, on a clock your best work doesn't keep.
So the rebuild is infrastructure rather than better arguing. Know the market above your work. Know the commercial reality below it. Connect the two while the decision is still open. Each connection is a case the room has to account for, and repeated, those cases accumulate into judgment, judgment compounds into trust, and trust is what a business spends as influence.
"Our efficiency is unparalleled, our ROI is fantastic, and we'll be out of business in five years."
Les Binet
The book promises the input, never the outcome. The bulbs belong to the market and the business. Widening your part of the join is what earns the standing to move the rest.
