When the Rules Change Faster Than Your Operating Model

A federal pathway change in the medical device industry this week did something every founder in any market eventually deals with. It collapsed a 12-month process into roughly two months for a specific set of qualifying companies. The companies that were ready for that change captured a year of runway over the companies that were not. Understanding the surgical robotics version of this story is part of the job for the founders we work with. Making money, building systems, and getting to where you want to go when the rules of your market shift faster than your operating model is built to handle, those are the problems The Build exists to help you think through.

The Rule Change That Rewrites a Year of Your Operating Model

Most businesses are built around a set of timing assumptions that the founder rarely makes explicit. How long it takes to win a customer, how long it takes to get paid, how long it takes from regulatory event to commercial outcome, how long it takes from product release to meaningful adoption. The operating model gets shaped around those assumptions. The capital plan, the hiring plan, the salesforce structure, the marketing budget, all of it. The numbers in the spreadsheet are downstream of those timing beliefs.

Then one day a rule changes, and one of those timing assumptions that the operating model was built around no longer describes the market. A regulator publishes a new pathway. A platform changes a developer policy. A payment processor revises a fee structure. An adjacent technology compresses a workflow that used to take weeks into days. The business that recognizes the change quickly and rebuilds its operating model around the new reality captures an advantage that is much larger than it looks. The business that runs the old operating model against the new rules pays for that lag in capital, in market share, and in a competitive position that is harder to recover than it should be.

The medical device industry got a rule change like that this week. The federal coverage timeline that breakthrough device companies have built their operating models around for years just compressed by roughly a year. The structure of the lesson is not specific to medtech. Every business has a rule that, if it changed, would rewrite a meaningful part of the operating model. Most founders have not asked themselves which rule that is for their business or what their model would look like the day after it changed.

Why Most Operating Models Are Slow to Update

The reason most operating models are slow to update is that the assumptions baked into them are not visible inside the company. The financial plan is visible. The customer-acquisition strategy is visible. The hiring plan is visible. The timing assumptions that produced all three are usually not. They are encoded as things like “we expect a 9-month sales cycle,” “we expect 6 months from product release to meaningful adoption,” “we expect 60 days from invoice to payment.” Those assumptions live in the spreadsheet but rarely in the strategy conversation. When the underlying reality changes, the spreadsheet keeps producing the same forecast, and nobody notices that the forecast is now wrong.

The compounding effect of running an outdated operating model for even a single quarter is significant. Decisions made on stale timing assumptions tend to overspend on activities that no longer matter and underspend on activities that newly do. The salesforce hires staff for the long-cycle motion the company assumed when the cycle has actually shortened. The marketing budget allocates against an awareness build that no longer needs the runway it has been given. The capital plan funds a runway against a milestone gap that has just closed. None of this is dramatic in the moment. The cumulative effect over a year is sometimes the difference between a company that captures the rule change and a company that does not.

The Build covers this kind of operating-model sensitivity in practical terms for founders. Not at multinational scale, but at the scale of the businesses subscribers actually run. What rule change would matter most for your business? What is the timing assumption your operating model is most exposed to if the underlying market shifts? How would you know if it had already shifted, and how quickly could you rebuild around the new reality if you did?

Building Systems That Update When the Rules Do

The companies that consistently capture rule changes are not the companies with the best forecasting. They are the companies whose operating systems are built to surface assumption changes quickly and to rebuild around them with less internal friction than competitors face. The forecasting matters, but it matters less than the structural readiness of the business to act on what the forecast reveals.

Building that readiness is operational work. It looks like making the timing assumptions explicit in the financial model so that a change in one of them produces a visible cascade in the rest. It looks like reviewing the assumptions on a quarterly cadence rather than treating them as fixed inputs that get set during planning and then ignored. It looks like building the capital plan with optionality for the moment when one of the assumptions shifts, rather than committing all of the capital to a model that depends on the current assumptions holding.

The Build is a monthly, physical newsletter. It arrives printed and mailed to subscribers every month. The format is part of the point. Operating-model questions are not the kind of questions that get answered by reading a digital headline on a Tuesday morning and forgetting it by Wednesday. They are the kind of questions that get answered by sitting with an idea, annotating it, returning to it, and applying it to the specific business the reader is running. The physical format is built for that kind of reading attention, and that kind of attention is what the work actually requires.