The decision to stay is rarely made. It is mostly defaulted to.

A partner does not usually sit down, weigh the alternatives, and consciously conclude that remaining where they are is the optimal choice. They simply continue - because moving is disruptive, because exploring feels risky, because the work is relentless and there is never a good moment to step back and reconsider. Staying is the path of least resistance, and the path of least resistance is the one most partners take, year after year, without ever quite deciding to.

But staying is a decision, whether or not it is made deliberately, and it carries a cost. The cost is not visible in any single year, which is exactly why it is so easily ignored. It compounds. And the nature of compounding is that the cost looks trivial up close and enormous from a distance - which means by the time the cost is visible, most of it has already been paid.

The gap that grows

Begin with the compensation gap - the difference between what a fairly priced practice would earn and what a mispriced one actually earns.

In any single year, the gap may be modest enough to dismiss. A partner who senses they are underpaid by some margin can rationalise it easily: the firm had a difficult year, the committee was constrained, the number will correct next time. And in isolation, the gap of a single year is indeed survivable. The problem is that the gap does not occur in isolation. It recurs, year after year, and because the structural forces that produced it - the compression of top performers, the politics of the pool, the historical credits that no longer reflect reality - do not change, the gap does not close. It persists, and persistence is what turns a tolerable annual shortfall into a substantial cumulative one.

Consider the arithmetic over a realistic horizon. A partner underpaid relative to their market value, even by a margin they could shrug off in any given year, accumulates that shortfall across five years, ten years, the back half of a career. The sums involved are not marginal. They are, over a career, often larger than any single decision a partner will make about their own finances - and they are paid silently, in the form of money that was earned but never received, value generated but captured by the firm rather than the partner who generated it. The gap that looked trivial in year one is, by year ten, a sum that would change a partner's life.

The cost that is not money

But the compounding cost of staying is not only financial, and the non-financial costs are often the larger ones, precisely because they are even harder to see.

A practice on the wrong platform does not merely earn less. It grows less. A partner whose practice would flourish on a different platform - one with the right clients, the right complementary capabilities, the right strategic momentum - is not simply being underpaid on their current platform; they are being prevented from building what they could build elsewhere. The clients they cannot serve because the platform lacks the capability. The matters they cannot win because the brand does not carry the weight. The cross-selling that does not happen because the surrounding practices are not there. These are not one-time losses. They are foregone compounding - the practice that did not grow because it was rooted in the wrong soil, year after year, while a better platform stood available and unexplored.

There is the matter of origination credit, which compounds in its own way. A partner whose origination is mis-credited - attributed to a colleague, to history, to the platform - does not merely lose the current year's recognition. They build a track record that understates them, and the understated track record becomes the basis for the next year's compensation, and the next, each year's mispricing becoming the foundation for the following year's. The partner is compounding a record that diminishes them, and the longer it runs, the more entrenched the diminishment becomes.

And there is the simplest cost of all: time. A career has a finite number of productive years at the peak of a partner's powers. Each year spent on the wrong platform, underpaid and under-grown, is a year of peak capacity that cannot be recovered. The partner who finally moves at sixty has lost the compounding they would have captured had they moved at fifty - not because the move at sixty is wrong, but because the eight years between were spent building someone else's platform instead of their own position. Time is the one input that does not replenish, and staying spends it whether or not the partner notices.

Why inaction feels safe and is not

The reason the cost of staying is so easily borne is that inaction feels safe in a way that action does not. Moving carries visible, immediate, concrete risk - the disruption, the uncertainty, the exposure. Staying carries invisible, deferred, diffuse cost - the gap that compounds quietly, the growth that does not happen, the time that passes. The human mind weights the visible risk of action far more heavily than the invisible cost of inaction, which is precisely why partners systematically overstay - not because staying is correct, but because its costs are structured to be ignored.

This is the trap. The cost of staying is real and large, but it is paid in a currency - foregone value, compounded over time - that does not announce itself. The partner feels safe because nothing is happening, when in fact a great deal is happening: value is being lost, silently, every year, and the loss is compounding. By the time the cost becomes visible enough to demand attention, most of it has already been incurred, and the years in which it could have been avoided are gone.

To understand the true cost of staying is not to conclude that one must always move. Sometimes staying is genuinely right - the platform fits, the value is fair, the move would not improve the position. The point is that this should be known rather than defaulted to. The partner who has actually examined their position - understood the gap, assessed the platform, weighed the compounding - and concluded that staying is right has made a decision. The partner who has simply continued, year after year, because examining felt risky and continuing felt safe, has not made a decision. They have allowed the cost to compound while telling themselves they were being prudent.

The most expensive thing a partner can do is nothing, performed slowly, over many years, in the belief that it is safe.

The least a partner owes themselves is to find out whether it is.