Your team presents ROAS every quarter. Typically lifted from platform or agency dashboards. A 5x return on ad spend. $10M in. $50M attributed out. The number is real. The efficiency is not.
ROAS measures correlation between ad exposure and purchase events. Not causation. Not incrementality. Not margin contribution.
- Customers who were already going to buy
- Retargeting loops firing on already-converted audiences
- Platform AI optimising for reported revenue, not your actual margin
The result: each quarter justifies more spend. More spend generates more attributed revenue. More attributed revenue proves the model works. The loop closes perfectly, and none of it touches the real question.
Without reconfiguring your brand infrastructure you are funding a measurement system, not a business outcome.
The measurement system was designed by the platforms being measured. Which number is your brand actually tracking?
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