The Machinery Behind "It Depends"
Inside the buyer-relative evaluation framework: how the same capability earns four different verdicts without anyone being wrong.
Momentum Research
Published Jun 2026
We don't evaluate capabilities. We evaluate them against a buyer.
The conceptual version of this argument was simple: a buyer's structure decides the verdict, not the capability. True, but abstract. This piece goes one level down — into the machinery. What do we actually run a capability through, and why does the same capability come out differently depending on who's buying?
We never ask whether a capability is good. We ask whether it's good for this buyer, in this position. We've built eight distinct buyer structures, each constructed with its own PMPM economics, risk position, upside model, regulatory environment, and population and diagnosis-rate patterns. A capability enters the same way every time. The verdict changes, because the structure it lands in changes.
Five considerations do most of that work, and each one shifts by buyer type:
- Wallet and value capture. Whose money is at risk, and therefore who keeps the value when the capability works — and where that value can leak to a third party before the buyer ever touches it.
- Definition of winning, and the evidence bar. What counts as success here, and what counts as credible proof of it. One buyer's win is another's rounding error.
- What's decisive. Which dimensions are load-bearing versus merely relevant. A buyer who prioritizes one dimension can't be talked into solution by a strong score on another.
- Structural and regulatory reality. The integrations, contracts, and rules the buyer is bound into, which set what's even possible before quality enters the picture.
- Population and burden. The prevalence, cost-concentration, and diagnosis-rate patterns that make a capability relevant to this buyer's actual book or irrelevant to it.
The fastest way to see it is to take one capability and run it past a few buyers.
| Buyer structure | Who bears risk | Who captures value | What “winning” means | What's load-bearing |
|---|---|---|---|---|
| Self-insured employer | Bears claims directly | Lands in the employer's own wallet | Lower total spend, healthier workforce | Net dollars saved; member uptake |
| Risk-bearing provider group | Holds risk against a budget | Captured only on the attributed panel | Total cost under benchmark for its population | Effect on the attributed slice — not the whole market |
| Fully-insured commercial plan | Bears claims, inside MLR limits | Can rebate back out before it sticks | Margin held within regulatory constraints | How savings interact with premium and MLR |
| Medicare Advantage plan | Capitated; risk-adjusted revenue | Can show up on the revenue side, not just cost | Bid efficiency, Stars, accurate risk capture | Diagnosis-rate and coding accuracy, as much as cost |
Same capability. Four different verdicts. Nobody is wrong; they're sitting in different structures.
Three disciplines keep that honest. First, we don't average. A strong score on a dimension that doesn't matter for this buyer never offsets a weakness on one that's important — a tidy composite is usually how an issue slips past the reader. Second, we're clear about where every number comes from. Hard facts stay separate from our own estimates, a benchmark never gets passed off as proof, and an open question stays open instead of getting filled with something that only looks like an answer. Third, the presentation is the same for every vendor. The framework decides how a report is built, not the vendor and not the polish, so what we conclude is settled before anyone decides how it reads — and formatting can never quietly do the persuading.
Most vendor marketing fails the moment it meets a buyer's economics, because it was written for the market in general — which is to say, for no one in particular. It promises savings without a structure to catch them.
Which is the whole point of treating the buyer side as real work. A capability can deliver every dollar in the pitch and still be the wrong buy, because the savings are real — they just may not be yours. Our job is to tell a specific buyer, before they sign, whether the value will land in their wallet or someone else's.
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