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In the early days of building an advisory firm, progress is a game of raw addition measured in the arithmetic of accumulation. When you start with nothing but a phone and a target list, every new client, employee, asset, advisor, office, and software vendor is a verifiable win! For a new firm consisting of a handful of founding partners, addition is a sign of survival.
It’s when a mature firm carries that same survival mindset into its next phase of growth that the trouble begins, and far too many firms bring start-up instincts to scale-up problems.
Treating every addition as an automatic victory is exactly how companies in a successful phase of growth permanently sink their own trajectories, trading raw mass for real value without ever noticing they made the trade.
The Art of Running a P&L
I have run profit and loss (P&L) statements that were complex enough to span a dozen tabs, and I can tell you that a financial statement is superb at measuring immediate inputs and outputs while being almost completely blind to the erosion of operational agility.
When you launch a new business line, make a senior hire, onboard a complicated client, or close an acquisition, the costs sit neatly in a cell on a spreadsheet. Room is made for them, and they are concentrated and apparent to even a casual reader of your income statement.
However, the real cost of these additions is diffuse, deferred, and by nature invisible to any grid of rows and columns. It lives in the flexibility your team loses, the dilution of local accountability, and the management attention it takes to force a working culture to absorb one more thing the firm has decided to do.
In every report leadership sees, any potential upside gets recorded while the true price is left off the page. Because it is never written down, it does not just persist but compounds, entirely unopposed.
This is not some isolated story from a salty old operator with battle scars reminiscing about those high-growth firms that lost their way. It’s so common that economists have a name for what is happening underneath. They call it diseconomies of scale, and the research on its impact on large organizations is completely unforgiving.
As an organization grows, coordination and administrative costs rise faster than production, and communication costs can climb exponentially with head count. Every decision that must travel through one more layer of management lands with the client or the market a little later than it should. Past a certain size, bigger stops meaning “better and faster” and starts meaning “larger and slower.”
We’ve all seen it. That high-growth firm that used to throw nothing but strikes simply loses its fastball, and no one can quite name the season when it changed or why things are different.
Aerospace Meets the High-Flying Advisory Firm
There is a discipline that has been forced to size and price this exact problem. In aircraft design, the whole game is to take something heavier than air, get it off the ground, cruise it at very high speed, and bring it home safely. There is no such thing as an isolated component in an airplane. Add a heavier radar to the nose, and that affects the entire airframe. The added weight demands a stronger structure, which needs a larger engine and more fuel to move it. The structure and fuel themselves weigh something, which demands even more structure and more fuel. Around and around this goes, until someone kills the wish list, the spiral finally settles, and you end up with a finished airplane.
Engineers putting people in a metal tube traveling 550 mph at 30,000 feet do not guess at how bad that spiral gets. In fact, they quantify it with a single number, the mass growth factor (MGF), which is simply a measure of what each new pound of capability ends up costing in finished aircraft weight once the extra structure, engine, and fuel to carry the feature are all accounted for.
For a typical airliner, that number is about 4-to-1, meaning every 1 lb. of new capability on the drawing board forces roughly 4 lbs. of new weight across the finished aircraft.
Unsurprisingly, the faster and more demanding the machine, the higher the ratio climbs, because a jet built to fly faster and harder needs more structure to survive the stress and more fuel to hold the pace. In fact, supersonic jets run an MGF ratio closer to 14-to-1.
A growing firm carries weight the same way, and a high-growth advisory firm is the industry's supersonic jet. The only difference is, unlike aerospace engineers, almost no leadership team knows its own MGF, much less tracks it.
The feedback loops of a typical leadership team are administrative rather than physical, and while no one prints an MGF on a quarterly report, the effect is identical.
A team agrees to accommodate a premier client with a few operational exceptions, let’s say a bespoke reporting package and custody of a handful of alternative assets. Or a firm onboards a talented senior hire who became available on a hastily written mandate and a custom comp plan. Each move looks not just reasonable but exactly like the bold, can-do/say-yes opportunities a growth leader is supposed to chase.
However, the veteran leader knows the reporting and custody exceptions: Each new client needs their own compliance check, which requires a specialized report, which eventually demands a dedicated person to run it. The opportunistic hire with no defined lane forces a department into being, which pulls support off the legal team, which delays agreements elsewhere, which slows M&A.
Growers grow, so leaders make these calls constantly. Each one is meant to add lift, but together they do the opposite, weaving an invisible web of friction that makes altitude harder to hold and hardens the firm against its own future. The faster you are flying, the more that weight pulls at the nose. One pound of ambitious accommodation, 14 lbs. of drag.
Two Ways Today’s Advisory Firms Get Heavy
Wealth management firms walk into two distinct versions of this weight trap, usually on purpose.
Inorganic Growth
The first is inorganic growth. A firm acquires a competitor to buy scale, inheriting its technology stack, its compensation philosophy, its people, and its culture — none of which quite reconcile with its own.
The historical data on acquisitions will tell you exactly what happens next. Study after study shows that between 70% and 90% of M&A deals fail to produce their promised value, and the root cause is almost always a failure to integrate versus acquiring at unreasonable terms.
Buyers routinely overestimate synergies and underestimate friction, underwriting the deal on a spreadsheet in a season of optimism, and paying the real invoice over years of decision latency as every routine choice must be translated across mismatched systems owned by a half dozen leaders. Complexity becomes multiplicative, not additive.
The buyer industrializes a mismatch and calls it scale at the all-hands meeting. Moreover, because the high-growth firm is the supersonic jet, the exchange rate is not the airliner's. What they have really done is agree to buy 1 lb. of capability and have the grocer drop 14 lbs. of complexity into the sack at checkout.
Number of Communication Channels
The second version impacts every firm, even those that only grow organically and never buy a thing. There is a piece of arithmetic from software engineering that every leadership team should tape to the wall. The number of communication channels on a team (1:1s, email, texts, Slack, and the rest) is not the number of people on it.
Where n is your headcount, the channels run n(n − 1) / 2. This means a team of 6 carries 15 channels [6 – 1 = 5, x 6 = 30, 30/2 = 15]. For anyone on a team of 6, that amount of complexity already sounds about right, and those 15 lines are likely the source of a few things that annoy you.
However, leadership has to see it from the enterprise altitude, where the mission must stay reasonably clear from the top of the firm to the person actually doing the work. Every one of those channels is a place the mission can get garbled on the way down. Alignment goes from being a soft virtue to the very thing the geometry is actively looking to break.
Double the team to 12, and the lines do not double; they more than quadruple, to 66. A firm of 50 is managing over 1,200. By 300 people, there are nearly 45,000 separate channels of communication that all must be kept at least somewhat ring-fenced and aligned.
In other words, head count grows in a straight line, but the cost of keeping everyone in sync grows on an accelerating curve and, at some point, the two cross. Past that inflection point, the next person you hire subtracts more in coordination drag than they add in output, and I don’t care who they are. The slowdown gets blamed on morale, the return-to-office policy, a bad hire, or a leader who isn’t ready.
In reality, it’s just geometry, and it is the precise mechanism by which a growing firm gets stuck to its own complexity like a fly in a glue trap, while the org chart has never looked healthier.
As a Leader, Your Central Job Is to Find the Frontier
In most circles, the consensus in wealth management still holds that scale is all lift. It is the force that keeps a firm up and ahead, and the advantages behind that belief are real.
Size not only carried you through the founding, but it also brings capital, recruiting leverage, and the capacity to absorb a regulatory burden that would crush a boutique firm. Heck, not that long ago, a multiple of revenue was the primary basis for how your firm was valued. Bigger has always been better!
However, this is a different era and, honestly, lift was only ever half the story when you were cruising through the air. As growth accelerates, the first question a leadership team has to answer is not how big the firm can get. It is where the frontier sits, the exact point at which scale stops generating lift and starts generating drag.
True scale should act as an amplifier, letting an advisor deliver an uncompromised client experience with more precision and a higher margin. What usually passes for scale is instead an enterprise's head count and a start-up's wiring bloating the operating model.
A firm that expands without a ruthless commitment to simplicity never escapes its inefficiencies. It trades the intimate, high-conviction energy that built the business for a slow-moving machine heavy with its own complexity and calls that trade progress in company-wide emails.
The drag first lands on management systems never built to carry it, which are the very places where speed and individual judgment used to live, and the reasons the “firm just kinda changed” without anyone knowing why.
Price the Pounds
There is one force that can bend these rules, and it is why the next decade will not look like the last. The coordination cost, the translation tax between mismatched systems, the management attention swallowed by exceptions — it is all the work of a unified operating model, and a real layer of intelligence can now carry it.
I argued in “The AI Fortress” that intelligence can counter the drag, but only on a clean operating model, not one you keep trying to fix by adding to it. For the first time, capability and weight can come apart.
However, that force will not do the bookkeeping for you. Intelligence rewards the firm that already knows its own weight, which is why this discipline underpins everything else. You have to be able to price the pounds.
This asks for a stricter kind of institutional bookkeeping. Every new capability has a benefit the spreadsheet captures and a structural weight it ignores, and the operator's job is to hold both in view at once.
Sustained compounders do not chase every available growth vector. They are the disciplined few who can check their egos, climb out of accumulation mode, and price the hidden cost of a capability before they add it.
The difference between the first-time executive and the veteran is that the latter understands that growth and complexity always travel together and that durability depends on keeping the two decoupled.
Estimating your own number is not complicated. Take your last three real additions — the acquisition, the premier client you accommodated, the senior hire for whom you created a role — and, for each one, count not what it cost on the day but what it induced 12 months later.
You’re not counting the salary or the purchase price, which the spreadsheet already caught, but the weight that never made the page: The head count hired to support it, the systems bolted on to carry it, the standing exceptions, and the recurring meetings that exist now only because that decision does. Put that induced weight over the capability you set out to buy, and you have your MGF, a rough ratio but an honest one.
Run it, and most firms find their number sits closer to the supersonic 14-to-1 than the airliner’s 4-to-1, which is the whole problem stated as arithmetic. Do it three or four times and you stop guessing at the spiral and start pricing it.
So, when the next acquisition, complicated client, senior hire, technology rollout, or capital partner comes up for decision, don’t immediately jump into the “look what we could build” mode.
The highest-leverage questions a leadership team can ask at that moment are not only what that opportunity will bring but also what it will weigh and whether the firm is still light enough to carry it and stay fast. Add the capability if the answer is yes, but price the pounds first. I have seen far too many companies that got worse after taking on that huge new account, golden acquisition opportunity, or senior recruit. Most were great ideas; they were just too heavy to be accretive to the firm’s flight.
Beyond my own experience, I can tell you the market has stopped paying for size. It pays for the firm that got big without getting heavy, for the enterprise that still moves like a boutique at a size that would have made a lesser firm sluggish. Aerospace was forced to learn this by necessity because a design too heavy to carry its own additions never leaves the ground and, if it does, it comes back down fast.
High-growth firms are no different, and you do not need to be an engineer to see that the same law now governs your growth firm. Price the pounds and keep it light enough to fly because the weight that grounds a great firm is usually not its failures, but the accumulated mass of every success it was too proud to leave off the plane.
Sean Baenen is co-founder of SMART Growth Partners. He was previously President of NorthRock, which grew both assets and revenue at a 30% CAGR during his nearly six-year tenure. He writes Built to Compound, a newsletter on growth and capital strategy for advisory firms, as well as House on Fire which offers leaders of growing firms principles for holding the line through the chaos.
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Advisor Perspectives welcomes guest contributions. The views presented here do not necessarily represent those of Advisor Perspectives.
