Why it matters here
This is the engine of Christensen's whole argument, and the part most often lost when the book is retold as a story about complacency.
The incumbent's managers are not asleep. Their resource allocation process is working exactly as designed. It funds the projects with the best-quantified returns, requested by the best customers, in the largest available markets. Disruptive projects lose that competition every time, on the merits, against criteria nobody would call wrong.
Read as an inversion, this tells you why the incumbent will not respond and lets you plan around it.
Read straight, it is about you, and this is the point where the volume turns around. The moment you have customers who matter, a revenue target and anybody carrying a quota, you have a resource allocation process. It is small and informal and undocumented, and it is already deciding.
What it is not
Not a warning against listening to customers. Customer input is the highest-value information you have. This is about who allocates, not who informs, and the two get conflated constantly.
Not a big-customer problem. Ten mid-sized customers asking for the same thing produce the same pull as one large one, with the added advantage of looking like a market signal rather than a concession.
Not solved by a strong founder. Christensen's finding is precisely that capable, attentive executives lost to this. Willpower is not the countermeasure. A different allocation is.
Not a stage that arrives later. It arrives with your first serious revenue, which for most companies is well before anybody would describe them as established.
Who holds the pen
Take last quarter's engineering time and work backwards to who requested each piece. Not who prioritised it. Who asked for it.
The resulting list is usually shorter than expected and heavily skewed toward your loudest existing accounts. That list is your resource allocation process, and nobody designed it.
Then notice who is absent. The customer you have not signed has no representation in that process. Neither does the market you are supposed to be creating. Both are, by construction, unable to ask for anything.
How it looks when it's working
There is a portion of engineering capacity that no current customer can request, and it is protected by something more durable than your mood in a given week.
You can name something built last quarter that no existing customer asked for, and say what it was for.
When a large customer asks for something, the conversation in the room is about whether it fits the axis, not about how important the customer is.
Your roadmap already has an owner. The only question is whether you chose them.
Why founders skip it
Because every individual allocation is correct. The customer is real, the revenue is real, the request is reasonable, and declining it costs something measurable against a benefit that is not.
The aggregate is the problem, and the aggregate is nobody's agenda item. There is no meeting at which the pattern becomes visible, because each decision was made in a different meeting, weeks apart, by people who were each doing their job well.
Where it breaks
The quarter that was fully spoken for. You look back at three months of shipped work and every item traces to a named account. Nothing was built for the market you have not reached yet.
The customer advisory board as roadmap. You convened your best customers to help set direction. They are, by construction, the people most satisfied with the current product and least representative of the ones you do not have.
The sales-led roadmap that nobody called that. Deals are being closed on commitments, the commitments become tickets, and engineering capacity is allocated by whoever is closest to signing something.
The pattern: each converts revenue into direction without anybody deciding that it should.
What it costs
Your own disruption window.
The company that won by serving customers the incumbent could not afford to serve becomes, within a few years, a company that cannot afford to serve them either. Not through arrogance. Through the ordinary arithmetic of a larger cost base and a bigger number to hit.
What you lose is the position from which the next thing could have been built, and you lose it while your metrics are improving.
When it competes
It pulls against the clock entry, which says an incumbent cannot chase a market too small to move their numbers. The same arithmetic starts applying to you the moment you have numbers to move, and it applies for the same good reasons.
The countermeasure has to be structural rather than attitudinal. Protect an allocation rather than an intention, and express it as a percentage rather than a promise. An intention loses to a real customer with a real request every time, and should.
Reflect
Take last quarter's completed engineering work and write the name of who asked for it next to each item. How much of it has no name against it, because it was for customers you do not have yet?
That percentage is your actual strategy, whatever the strategy document says.