Ask a revenue leader how they bring in new customers and you get a list.
There's the sales-led motion, with people who prospect and people who close. There's product-exposed, where a free trial does some of the qualifying before anybody picks up a phone. There's genuine product-led growth, where the product converts without a human in the loop. Then offers, partnerships, and whatever evergreen thing has been running since before the current team arrived.
Nobody finds that confusing. A CRO runs several of those at once and it doesn't occur to anyone that they should pick one.
Now ask the same person about expansion.
You get a single word. Expansion. One undifferentiated thing, usually described as a lever rather than a motion, and almost always in the passive voice: expansion happens, expansion is up this quarter, we're seeing good expansion in the enterprise segment.
That's the tell. New business is a set of motions you run. Expansion is weather you report on.
There are at least two of them
The human-powered one is what most of the writing on this site is about. You know what a customer could buy next, you know what has to be true before it helps them, you say it out loud months early, and you have the conversation when they arrive. Readiness gates, a named next thing, a conversation somebody was told to expect.
The product-led one gets confused with having an upgrade button, which isn't the same thing at all. Real product-led expansion means the product's built to drive the next purchase. It moves them toward more capacity, it makes credit consumption visible before they hit a wall, it surfaces the add-on when the work requires it, and it turns upgrading into the obvious next step rather than an errand.
That's product-led growth pointed at people who already pay you. It's expansion, and it runs on a completely different set of inputs than the human motion does.
You can run both. Most companies run neither.
What "neither" actually looks like
It doesn't look like failure, which is why it survives.
If a customer wants to buy more, they can come and ask. If they want more in the product, they can go find the upgrade screen themselves. If they mention it to whoever owns the account, that person can explain how to purchase it.
Every one of those describes a place a sufficiently motivated customer can go to give you money. None of them describes a motion. Nothing's pushing anybody toward anything, nobody owns the number, and there's no revenue operation behind any of it.
So what you've got is order-taking with good manners, and the results are exactly what order-taking produces.
Why the small number gets read as a small lever
Here's where it turns into a permanent condition.
Expansion comes in as a modest share of new revenue. Somebody looks at that share and decides it's a minor lever, not worth the machinery. So no machinery gets built. So it stays a modest share. So next year the same conclusion's available, with a year more evidence behind it.
The evidence for ignoring it is manufactured by ignoring it.
And when somebody does try, they usually try once, badly, with the only tool on hand, which is pressure aimed at a list. It underperforms, because of course it does, and the lesson taken isn't that it was done badly. The lesson is expansion doesn't work here.
That verdict's expensive because it can't be appealed. Nobody revisits it for three years.
The version of this argument you'd never accept about sales
Picture a company that ran one sales motion, badly, with no owner and no forecast, got a weak result, and decided new business doesn't work.
You'd have questions. Which motion? Run by whom? Against what target, with what coverage?
Nobody asks those about expansion, because there's no vocabulary to ask them in. A failing sales motion gets diagnosed down to the stage. A failing expansion motion gets the whole category retired.
So start with what you'd demand of any other channel. Name the motions you're actually running, plural, and give each one a number somebody carries. Then find out whether expansion works here, which is a question nobody at your company has yet asked under conditions that could answer 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.