Why outcome-based pricing is coming for professional services — and what it means for PE underwriting

There is a number buried in a recent Wall Street Journal exclusive on ServiceNow that should stop every professional services firm — and every private equity investor who owns one — cold.

Fifty percent of ServiceNow’s new business revenue now comes from non-seat pricing.

Not a pilot. Not a strategic experiment. Half of their new business. In a company that, until recently, was one of the most celebrated seat-license businesses in enterprise software.

ServiceNow’s stock is down 32% this year, and the financial press has largely framed that as a stumble. They’re missing the point. What ServiceNow is actually doing — under the leadership of Bill McDermott, who told the Wall Street Journal “We don’t live in a SaaS neighborhood… we’re playing an entirely different game” — is executing one of the most consequential business model transitions in enterprise technology. They’ve stopped selling seats. They’re selling tokens. Usage. Outcomes. And in doing so, they’ve reframed their total addressable market from $90 billion to $600 billion.

That’s not a product pivot. That’s a fundamental rethink of what gets priced, and why.

The SaaS industry was built on a single elegant bet: companies hire more people, they need more seats, software grows with headcount. AI just broke that bet. And the disruption doesn’t stop at the software industry’s edge.

It’s coming for professional services. And private equity investors who own professional services assets — and the Operating Partners charged with driving value inside them — need to start asking whether their assumptions are still intact.

The quiet fiction at the heart of professional services

For decades, the professional services industry has operated on a model that both sides of the client relationship have accepted — not because it was optimal, but because there was no better mechanism available.

Clients pay for time. Hourly rates. Agreed retainers. Blended fee arrangements. The implicit promise is that expertise, judgment, and effort are being deployed on their behalf, and that the invoice reflects the work. In many cases it does. In many cases it doesn’t. And in almost every case, the fee bears only a loose relationship to the outcome actually produced.

This is the quiet fiction. And it has persisted not because clients preferred it, but because the attribution problem was genuinely hard. Did the strategy consulting firm’s recommendation drive the revenue growth, or did the market turn? Did the restructuring advisor’s intervention save the company, or was management going to figure it out anyway? Did the search firm find the right executive, or did the culture and the opportunity make them successful?

Ambiguity protected the hourly model. When outcomes are hard to measure and attribute, time becomes the default unit of exchange.

That protection is eroding — and Operating Partners sitting inside PE portfolio companies are going to be among the first to feel it.

When AI enters the room, the hours stop adding up

AI agents are already doing meaningful portions of the analytical, research, drafting, and process work inside professional services firms. Not hypothetically — now. A task that consumed a senior associate for twelve hours two years ago takes two hours today, with output that is frequently better structured and more comprehensive.

The client isn’t receiving twelve hours of value. They’re receiving the result.

For a period of time — and we are still in that period — firms can absorb this efficiency gain internally. The work gets done faster, margins improve, capacity expands. The billing model stays intact because the client doesn’t yet have visibility into how the work is being produced.

That window is closing.

Clients are increasingly sophisticated about what AI can do. They are deploying it inside their own organizations. They understand, at a conceptual level, that the research memo their advisor sent over was not produced the way it was three years ago. And when that understanding crystallizes into a direct conversation about fees — and it will — the professional services firm that is still invoicing on hours is going to have a very difficult answer to give.

Can firms really expect clients to keep paying for the twelve-hour version of work when everyone in the room knows it took two?

The honest answer is no. Not forever. And probably not for much longer.

This is where the Operating Partner becomes a pivotal figure — not just inside their own portfolio companies, but as a change agent across the professional services relationships those companies maintain. Operating Partners are often the most direct interface between the PE firm and the external advisors — the consultants, the legal teams, the search firms, the restructuring advisors — retained to support value creation. They see the invoices. They evaluate the work product. They are, in most cases, the first person in a position to ask the question that clients everywhere are going to start asking: does this fee reflect what was actually produced?

Outcome-based pricing is not a preference. It’s a market inevitability.

The shift happening in enterprise software is not an isolated phenomenon. It is the leading edge of a broader repricing of work itself — a movement away from pricing human activity and toward pricing results produced.

ServiceNow’s TAM expansion from $90 billion to $600 billion is instructive not just as a number but as a logic. When you stop charging for access and start charging for outcomes, the ceiling on your addressable market is no longer the size of the workforce. It’s the size of the problem you’re solving. That logic applies in software. It applies equally in professional services.

The firms that will thrive in this transition are the ones that can credibly answer a simple question: what result are you actually delivering, and how do we know when you’ve delivered it?

For some professional services categories, that question has a clean answer. Litigation outcomes. Transaction close. A placed executive. A recovered margin. These are discrete, measurable, attributable results — and the firms operating in these spaces already have pricing models that, in their structure, are closer to outcome-based than their hourly counterparts.

For others — management consulting, strategic advisory, ongoing operational support — the answer is harder, and the transition will be more disruptive. These are the firms whose retainer was always partly a relationship fee, whose hours were a comfortable unit of account that neither side examined too carefully. Those firms face the most significant reckoning.

The Operating Partner has a specific and important role to play in this transition — both inside their portfolio companies and in how those companies engage external advisors. On the internal side, the OP is uniquely positioned to lead the conversation about how AI-driven operational efficiency should be reflected in how the company itself prices and delivers its services. If the portfolio company is a professional services business, this is a direct strategic imperative: get ahead of the client conversation before the client forces it. Define what outcomes look like. Build the measurement infrastructure that makes outcome-based pricing credible and defensible. Pilot it with a segment of the client base before it becomes a demand across the whole book.

On the external side, Operating Partners should be renegotiating advisory arrangements with the same rigor they apply to every other cost and value driver in the business. Retainers that made sense before AI-assisted delivery need to be reexamined. Milestone-based and success-fee structures should be on the table in every significant advisory relationship. The OP who simply renews the consulting retainer at last year’s rate — without asking what the AI-augmented firm is actually producing for that fee — is leaving value on the table and, more importantly, missing a strategic signal about what their own portfolio company should be doing with its own clients.

The private equity problem nobody is underwriting for

Professional services has been a popular and productive investment theme for private equity. Staffing firms. Consulting practices. Legal process outsourcing. Accounting and finance advisory. Executive search. These businesses attracted PE interest for reasons that made sense: recurring retainer revenue, sticky client relationships, asset-light models, and what appeared to be durable pricing power rooted in expertise and trust.

The underwriting assumptions baked into those investments — many of which are already closed, with capital deployed and hold periods underway — were built on a model that is now under structural pressure.

Consider what a typical professional services LBO assumes: relatively predictable revenue from retainer and fee arrangements, margin expansion through operational efficiency and scale, and an exit multiple derived from EBITDA that the market values as recurring and defensible. These assumptions hold if the pricing model holds. They become significantly more complicated if clients begin renegotiating the terms of engagement — pushing toward milestone-based fees, outcome-contingent arrangements, or simply demanding lower rates that reflect the AI efficiency they know the firm is capturing.

This is not a distant risk. It is the same dynamic that is already repricing ServiceNow — not because the business is broken, but because the market is discounting the uncertainty of a model transition that hasn’t fully resolved yet.

PE investors sitting on professional services assets need to be asking questions they may not yet be asking with enough urgency. How exposed is this firm’s revenue to client-driven pricing renegotiation? Does the management team have a credible answer for what outcome-based engagement looks like in their category? Is the firm’s operational efficiency from AI being captured in margin, or is it creating a pricing vulnerability that clients will eventually exploit? And what does the exit multiple look like if the retainer model softens before the hold period ends?

This is precisely the terrain where a strong Operating Partner earns their value. The OP who can walk into a professional services portfolio company, diagnose the pricing model exposure, map the client relationships most likely to push back first, and architect a transition toward outcome-based arrangements — before the client demands it — is delivering something that no amount of operational cost reduction can replicate. They are protecting the integrity of the revenue model that the entire investment thesis depends on.

The firms that get ahead of this will likely expand their addressable market and their margin simultaneously. The firms that defend the retainer will find themselves in an increasingly difficult conversation with increasingly informed clients — and an increasingly skeptical buyer when it comes time to exit.

The SaaS parallel holds. ServiceNow is down 32% executing the right transition. That’s the market pricing the uncertainty of getting from here to there, not the destination itself. Professional services PE assets may face a similar repricing — not as a reflection of business quality, but as a reflection of model transition risk that the original underwriting didn’t contemplate.

The Operating Partner who sees this coming and gets in front of it is not just protecting asset value. They are creating it.

What outcome-based pricing actually demands

There is something worth saying about what it means to operate in a model where compensation is genuinely tied to outcomes — because it is not simply a different billing arrangement. It is a different relationship with your own conviction.

When you bill by the hour, you can invoice for effort. You can document the work, demonstrate the diligence, and present the time logs as evidence of value delivered. The model provides cover. You showed up. You worked. You billed.

When your fee is contingent on a result, none of that cover exists. You back your judgment with the structure of the engagement. You take on the attribution risk that the hourly model conveniently avoids. You are, in the most direct sense, betting on yourself.

That demands a different kind of selectivity about what work you take on. A different level of accountability for outcomes you cannot fully control. A different conversation with clients at the front end of an engagement — agreeing not just on scope but on what success actually looks like and how you’ll know when you’ve reached it.

These are harder conversations. They are also more honest ones.

And they are the conversations that the professional services industry — whether it chooses to or not — is about to start having at scale.

A note on my own firm

I would be intellectually dishonest if I didn’t acknowledge that everything I’ve written here applies directly to Lancor and to the work we do.

Executive search has always operated closer to the outcome end of the spectrum than most professional services categories. But I want to be precise about what that actually means in practice, because intellectual honesty demands it.

Approximately half of our fee is contingent on a successful placement. That portion is a genuine bet — we don’t get paid if the work doesn’t produce the result. The other half comes in the form of a retained fee paid on an engagement basis, closer to the time-based model I’ve been scrutinizing in this piece.

I’m not going to pretend that makes us a pure outcome-based firm. It doesn’t. What it does is put us in a position that I think is more instructive than either extreme — we live daily in the tension between the two models. We understand what it feels like to have real skin in the game on the outcome side, and we understand the legitimate role that retained engagement plays in funding the work that makes the outcome possible.

That tension is, I suspect, where most professional services firms will eventually land. Not a wholesale abandonment of retainers, but a meaningful shift in the balance — more of the fee at risk, tied to results that both parties have agreed to define clearly at the outset.

The direction of travel is not ambiguous. Clients will push for it. AI efficiency will accelerate their rationale for doing so. And the firms — and Operating Partners — who get in front of that conversation rather than waiting for it will be the ones who define what professional services looks like on the other side of this transition.