By Albert · ElementalTV
Why does one publisher’s CPM hold while another’s slides in the same quarter, in the same market, with both revenue lines pointing up?
There are two kinds of inventory in connected television, and only two. There is the impression that exists in one place, at one time, and nowhere else. And there is the impression that eleven or twelve platforms are selling at the same moment, interchangeable, separated only by price. The first kind is scarce. The second kind is substitutable. An NFL window on Peacock is scarce. A run-of-network spot on a free ad-supported channel is substitutable, and the buyer knows it, because the same audience is waiting on Pluto, on Tubi, on Samsung TV Plus, on Roku’s own channel, by Tuesday. Scarcity sets its own price. Substitution takes the market’s. Almost every seller in CTV is in the second category and is pricing as if it were in the first.
Watch the same shape play out three times.
A FAST operator prices broad inventory at fifteen to twenty-five dollars and grows revenue by adding channels and ad load. The revenue climbs. The CPM does not, because every channel added is one more substitutable impression in a pool the buyer already has too much of. The operator chose breadth, and breadth is the substitutable side.
A premium streaming service opens its inventory to the auction to capture the spend everyone says is coming. The biddable revenue rises, and rises fast. But the impression that used to clear at a negotiated forty now clears against the deep programmatic stack at the market’s rate, and the blended CPM slides while the revenue line still reads up. The service chose the auction, and the auction is the substitutable side.
A smart TV maker sells its remnant run-of-network audience at scale, priced as remnant, because that is what the deep stack pays for an impression it can get anywhere. The volume is enormous. The rate is whatever the floor allows. The maker chose scale on commodity inventory, and commodity inventory is the substitutable side.
Three sellers, three revenue lines pointing up, three CPMs that fall or sit flat regardless. The tell was never the revenue line. The revenue line climbs on both sides of the binary. The tell is whether the supply can be flooded. The scarce seller holds thirty-five to sixty-five dollars on a live sports window because no quantity of FAST expansion produces another Sunday afternoon game. The substitutable seller watches its rate track the glut, because the glut is made of exactly what it sells.
Here is what the binary gets wrong. Tubi is substitutable, and Tubi is winning. Its ad revenue grew twenty-seven percent year over year, it cleared a billion dollars in annual revenue, and it turned its first profit ahead of Fox’s own schedule. Roku is substitutable, and Roku reached positive operating income at better than sixty percent platform gross margins. Neither did it by defending a CPM. They did it by pricing the business on volume and margin and refusing the rate fight entirely. The binary says the substitutable seller’s price falls. It does not say the substitutable seller loses. Scale, run as scale, beats scarcity run as vanity.
So the question is not whether your inventory is premium. Every deck says premium. The question is whether anyone else is selling the same impression right now, and if they are, whether you are still chasing a rate you cannot win or have switched to the only game your side of the binary actually plays. Scarce sellers win on price. Substitutable sellers win on cost, on scale, on margin, on the whole business except the number you keep putting in the headline. Which side is your inventory on, and are you still pricing it for the other one?
Filed from inside the auction. The Signal ✦ By Albert · ElementalTV
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