For years, the way to look serious in marketing has been to talk about revenue. Get a pipeline number, report influenced revenue, get a seat in the forecast.

It sounds like growing up. Marketing finally talking business instead of colours and campaigns.

I spent most of my career doing exactly that, and I now think it’s the single thing keeping the discipline junior.

Start with the P&L, because that’s where these arguments actually get settled.

Revenue is one line. On most B2B org charts it has one owner, and it’s sales. They carry the target, they take the commission, they answer for the miss.

That’s not a slight on marketing. It’s just how accountability is drawn.

And two functions can’t own the same number.

So the moment marketing claims a share of revenue, it walks onto ground that already has an owner, and it does it from the weaker position. Sales closed the deal. Sales spoke to the buyer. Sales can point at the signature.

Marketing turns up afterwards with a model saying it influenced forty per cent of what happened.

You can imagine how that meeting goes.

The tool we reach for here is attribution, and attribution is where the credibility quietly drains out.

A multi-touch model will happily hand marketing a large slice of closed revenue. The problem is that finance knows, and any honest sales director knows, that most of those deals had momentum of their own. Existing accounts. Renewals. Referrals. The ordinary pull of a business that was already selling.

The model can’t tell the deal marketing created from the deal that would have closed anyway. It counts both.

So the number we bring to prove our commercial worth is precisely the number the room trusts least. Every budget cycle it gets waved through politely and discounted privately.

And the harder we push it, the more we confirm what everyone already suspects, which is that we’re marking our own homework.

Fight for a number somebody else owns and you’ll always be the junior claimant.

Now the part that should cheer you up, because none of this is an argument for marketing to shrink.

Sales owns revenue: what came in. But in most companies nobody owns the efficiency of how customers are won. What it actually costs to acquire one, fully loaded, against what that customer’s worth over their life.

That isn’t sales’ number. They’re measured on the top line, not the cost of getting there. It isn’t finance’s either. They see the totals but not the mechanics underneath them.

It sits in a gap. And it’s the most commercially important number marketing touches, because it decides whether growth is building value or quietly destroying it.

It’s also ours for the taking.

It rewards the things marketing actually controls. Sharper targeting. A stronger brand that lowers the cost to win. Better retention that lifts the value.

And unlike influenced pipeline, finance can’t wave it away, because it’s built in their language out of their kind of inputs.

Claiming a slice of revenue makes marketing a junior partner in sales’ story. Owning the efficiency of acquisition makes it the author of its own.

One is a credit dispute you’ll keep losing. The other is a number the CFO wants and currently has nobody to give them.

One fair caveat, because the argument doesn’t hold everywhere.

In some sectors marketing genuinely is a revenue engine. Ecommerce, most of consumer, the self-serve end of SaaS. The buying happens through the funnel rather than through a person, and the revenue claim there is earned.

The trouble starts when marketers in a sales-led business borrow that playbook, because the go-to-market model isn’t the same.

The tell is a real salesforce. The moment a person closes the deal, revenue has an owner in the room, and reaching for a slice of it is a fight you’ll lose. The stronger the salesforce, the less marketing should chase the revenue line and the more it should own the efficiency of what it feeds in.

So let sales keep it. It was always theirs, and wanting it was our mistake.

The commercial case for marketing was never “we helped close that.”

It’s “we can tell you, better than anyone can, whether the customers you’re winning are worth what they cost, and we can move that number.”

Marketing isn’t a revenue function. It’s an efficiency of growth function.

That’s a promotion, not a demotion, and it’s sitting there unclaimed.