Marketing measurement is the closest thing a brand has to a moat. Most executives treat it like a utility bill, something to minimize and never think about, and it's quietly costing them their market.
You can see it in how the weak brands buy.
A weak CMO wants measurement off their desk, so they buy the tool that most flatters what they already believe. They're not shopping for truth. They're shopping for a second opinion that agrees with the first.
A weak CFO wants one clean number, fast, to feed a model that produces a budget, a forecast, and someone's bonus. They'll take precision over accuracy every time, a confident wrong number over a messy right one, because the confident number is the one that's easy to defend in a board meeting.
None of them are stupid, which is what makes it worse. They're smart people who decided that the one function capable of winning them the market wasn't worth their attention.
These executives are wrong, and the market is going to collect on it.
Finance understood this decades ago. If you can value a security a little more accurately than everyone else, you take profit out of the gap, over and over, and you call it edge. Marketing is no different.
A brand that reads its true marketing ROI even slightly better than its competitors can take a category, especially a crowded and expensive one like gaming, travel, ecommerce, or banking, where everyone is bidding against everyone and nobody has margin to spare.
Growth By Science put a number on this last year. For an advertiser spending north of $500M a year, we built a custom market-share model that showed exactly how mismeasurement would play out as they moved into a new market. Undervalue a key channel and you starve the thing that's working. Overvalue one and you pour money into the thing that isn't. Either mistake, carried into a competitive market, ended the same way: share walking out the door.
In their case, good versus bad measurement was worth nearly 10 percentage points of share in that market--the difference between being the clear winner, or a long-tail competitor.
The black-box measurement our customer had been renting wasn't just imperfect. It was a house of cards on the brink of collapse the moment a rival starts to measure just a bit better. Not to mention it was costing them tens of millions of dollars in ineffective spend.
Measurement isn't the cost of doing marketing. It's the edge that decides who takes the market and who quietly loses it.