Founders optimise the value they create. Buyers decide what is left after subtraction.
Across 10,000+ startups reviewed, the most underestimated number in a value proposition is not the value. It is the customer's cost of change.
Two products. One creates €1M of value. Adoption destroys €800k of it: implementation, disruption, training, delay, politics, risk. Net €200k.
The other creates €500k. Adoption destroys €50k. Net €450k.
Founders fall in love with the first. Customers buy the second.
The cost never shows up in your deck
Implementation. Training. Integration. Procurement. Compliance review. Workflow disruption. Management attention. Risk.
It shows up in the buyer's calendar instead.
And it is personal
In the B2B deals I have seen, adoption decisions look organisational and behave personally.
The upside of a good implementation goes to the company. The downside of a bad one lands on the person who signed.
You calculate €1M minus €300k and call it €700k of net value. The buyer calculates career risk.
References, security, compliance, predictable delivery. That is not admin. That is how you lower the personal number.
Time is part of the cost
Customers ask how much value. Then they ask when.
€500k in eighteen months loses to €250k in two weeks.
One shape repeats, aggregated from several companies and rounded. Annual value around €30,000. Organisational energy burned in year one: €20,000 to €25,000, all of it spent before the first euro arrives. Value lands in month nine. Patience runs out in month six.
At that size, the value and the cost of change are the same order of magnitude. The net goes negative on friction alone.
The buyer liked the outcome. The organisation choked on the path.
Subsidising is not solving
Customer success headcount. Heavy onboarding. Custom integrations. Discounts.
It works for a while. Customers buy. Usage grows. Revenue appears.
You have not reduced the customer's cost of change. You have absorbed it.
Reducing it is structural. Absorbing it is operating expense. One of them scales.
If you permanently outwork your customer's internal friction, you have not proven value. You bought revenue.
Design the denominator
The best companies do not only raise the value. They make it easier to reach.
The cleanest case I have watched up close: the product lived inside the spreadsheet the buyer already used. No process change, no IT project, no security review, no training. A hundred euros a month for a thin slice of obvious value. The cost of change was designed to be near zero.
Name the price of that choice before you make it. A product built inside someone else's workflow is smaller, less ambitious, and harder to pitch as a platform. You trade narrative for adoption.
Your side has a denominator too
A key account manager once brought me a large corporate prospect. Attractive on paper. A side comment about a risk-mitigation requirement sounded routine to him, so I kept asking questions. The more I asked, the clearer the cost of meeting it became. Our value capture would have been minimal or negative.
I refused the deal. They could not believe it.
Our competitor took it and lost millions.
Before your next deal
Price the cost of change as a number, the way you price the value.
If your product disappeared tomorrow, what operational outcome breaks? "Nothing that matters" is your answer.
Interview the customers who left. Yourself.
Great products create value. Great companies create value that survives change and comes home.
More scars than trophies.