Strip the motivation off a sales organization and look at what's underneath it.
Somebody makes up a number. Not derived, not discovered. Constructed, in a room, from what last year did and what the board needs next year to look like. Then it gets divided into quotas, and the quotas exist to force an action that wouldn't otherwise happen on schedule.
And then the whole thing runs on one fact: you cannot miss it.
That's not a positive motivation. It's the avoidance of a specific, named, personally attributable loss. Sales is a loss aversion machine wearing a lot of enthusiasm, and the enthusiasm is real but it isn't what's driving the car.
None of that is a criticism. The machinery works. It's the reason sales gets done at all, on a schedule, by people who would otherwise do something more comfortable. Almost nothing else in a company has a mechanism that reliable.
Now point it at your existing customers
This is what people do when acquisition gets expensive. The base is right there, it's cheaper, it should be easier. So the reflex is to take the tactics that work and aim them at customers you already have.
It doesn't just underperform. It can make things worse, and the reason is not subtle.
The moves that pull a stranger across a line are calibrated for somebody with no relationship to damage. Urgency they can't verify. A discount that expires. A close that assumes the conversation ends today. Run that on a customer who already trusts you and you've spent something you weren't tracking, in exchange for a deal that was probably going to happen anyway.
That's the visible failure and it's the one people notice. There's a second one underneath it that nobody notices, and it's the one that actually explains why expansion stays flat.
The machine doesn't run because there's nothing to avert
Go back to what makes sales work. A number that exists, divided into quotas, attached to a person, with consequences for missing.
Expansion has none of that.
Not because anyone decided against it. It's that the revenue is latent, which means it's never been counted. There's no figure anywhere saying this base should produce another X. So there is no target, which means there is nothing to miss, which means nothing to avert, which means the entire mechanism that makes the other engine reliable is simply absent.
You can point sales at existing customers all you like. You've aimed a loss aversion machine at a place where no loss is possible.
Nobody has ever been fired for missing expansion revenue, and the reason is that nobody ever said what it was.
Which means willpower is the wrong fix
The usual response to this is exhortation. We need to be better at expansion. It's a priority this year. Everybody owns it.
That does nothing, and now you can see why. You're asking people to reliably produce an outcome that has no number, no owner, and no consequence, using motivation alone, while sitting next to a function that has all three. Whatever attention exists will drain toward the thing that can hurt them.
That's not a character problem. It's what happens to any activity that competes for time against a quota.
Manufacture the loss
So the first move isn't selling. It's counting.
Identify the number. Go and find out what the base could produce: what customers already have against what exists, how many are past the point where the next thing genuinely helps, and what that is worth. It doesn't have to be precise. It just has to exist, because a number that exists can be missed and a number that doesn't exist can't.
Attach it to somebody. Not to everybody. One person whose forecast contains it, who gets asked about it in the meeting where pipeline gets asked about.
Then put it where it can hurt. In the plan. On the dashboard. In the board deck, next to the acquisition number rather than three slides behind it.
That sequence is doing something specific, and it isn't administrative. It's constructing the loss that expansion doesn't naturally have, so the same mechanism that makes the other engine reliable can operate on this one.
The uncomfortable version
One caution on the word, because the obvious next move is to quota it. A reserve is not a quota, and the difference is where the number came from: one is constructed and the other is measured, which changes what missing it means.
The reason latent revenue stays latent isn't that people don't believe in it. Ask any executive whether there's more money in the base and they'll say yes before you finish.
It stays latent because belief has never moved anything on a schedule, and fear of a specific number does it every quarter.
You don't need your team to care more about expansion. You need them to be able to miss it.
Lincoln Murphy formally named and popularized Customer Success starting in 2010 and has spent 15 years connecting it to expansion revenue and commercial outcomes. Read The Premise.