A Mumbrella piece lays bare the attribution gap between agency spend and business outcomes. Most businesses cannot connect their marketing investment to revenue. The incentive structure is the problem.
The agency delivered everything in the scope of work. The business still cannot tell you what it got for its money.
Mumbrella published a piece last week that should be uncomfortable reading for every agency and every client writing six-figure retainer cheques. The question was simple: if you spent $250,000 on an agency last year, can you connect that spend to revenue? For most businesses, the honest answer is no.
The article exposes what anyone in Australian marketing already knows but rarely says out loud. The incentive structure between agencies and clients is fundamentally misaligned. Agencies are paid for activity. Clients need outcomes. The gap between those two things is where $250,000 disappears without a trace.
This is not about agencies being bad at their jobs. Many are excellent at execution. The problem is structural. Most agency contracts are scoped around deliverables: campaigns launched, content produced, media placed, reports delivered. Revenue attribution requires a completely different measurement framework that neither party has invested in building.
Typical annual agency retainer spend for mid-market Australian businesses with no revenue attribution in place
The measurement gap is widest in the middle market. Enterprise businesses with $1M+ marketing budgets usually have attribution infrastructure (even if imperfect). Small businesses spending under $50K can see the impact in their bank account. It is the $100K to $500K range where the blind spot is most dangerous. Enough money to cause real damage if misallocated, not enough to justify a dedicated analytics function.
In our benchmark data, the gap shows up clearly in the Data and Tracking dimension. Businesses scoring in the bottom quartile on data maturity are three times more likely to be running agency relationships without any attribution model. They are paying for marketing activity but have no system to evaluate whether the activity works.
The fix is not complicated but it requires both sides to change. Agencies need to stop resisting measurement because it might reveal underperformance. Clients need to stop accepting "brand awareness" as a catch-all for spend they cannot measure.
Why it matters
The next 12 months will separate agencies that can prove their value from agencies that cannot. AI tools are making marketing execution cheaper. If an agency's value proposition is "we do the work," they are competing against automation. The agencies that will survive are the ones that can tie their work to business outcomes and prove it with data. For clients, this means the cost of not having attribution is about to get higher. Your next agency pitch will include at least one competitor that can show you exactly what your spend produced.
What to do about it
Before your next agency review, build a basic attribution framework. Define what revenue-generating actions you want marketing to drive (leads, sales, signups, bookings). Set up conversion tracking for each one. Ask your agency to map their deliverables to those actions. If they cannot or will not, that is the answer to the $250K question. You do not need perfect attribution. You need directional accountability. Start there.
If you cannot measure it, you are not investing. You are hoping.