Strategic Entropy™ · August 27, 2026 · 6 min read
Why Successful Companies Fail While the Numbers Look Good
Your best year can be your most dangerous one. How success hardens into a blind spot, and five questions to ask while the numbers still look good.

Cross-border CEO, operator and author
In brief
- 1A company is often most exposed in its best year, because good results remove every reason to question the model.
- 2Firestone, Intel and Nokia did not fail from laziness; they executed old premises very well while the market moved on.
- 3Turn each reason you won into a written premise, attach one number that would prove it wrong, and fund the alternative separately.
The most dangerous meeting I know is the one where everyone relaxes. Sales are growing, the product works, the backward-looking numbers look favorable, and someone says what the whole room is thinking: why touch what works?
Success can be toxic, and you may be making a big mistake without realizing it. You may be obsessed with protecting what made you successful, and that can be the beginning of your obsolescence.
I don't say this to be dramatic. I say it because the record is unkind to companies at the top. Boston Consulting Group put the chance that a U.S. public company leaves the listed market within five years, through bankruptcy, liquidation, merger or acquisition, at 32 percent, against 5 percent fifty years earlier.4 Many of the companies behind that number were well run. They were well run for a world that was going away.
I call the underlying condition Strategic Entropy™: the silent loss of competitive capability that comes from holding on to premises that are valid today and won't be tomorrow. It reaches the income statement late, which is why I wrote a longer essay on why profitable companies die. This piece is about the moment before that, when success itself starts doing the damage.
The best-managed tire company in America
In the late 1960s, Firestone was seen by some observers as the best-managed tire maker in the United States. Then Michelin brought the radial tire to the U.S. market. Radials lasted longer, handled better and were safer. They also threatened the profitable replacement business, because a tire that lasts longer is a tire you sell less often.1
Firestone did not ignore the threat. It moved fast. When Goodyear answered radials in 1967 with the belted bias tire, an upgrade of the old technology, Firestone matched it within months and retooled its plants. A former president remembered the transition as "pretty much business as usual." Board records, Donald Sull found, show no systematic evaluation of that bet, only a string of incremental investments approved one at a time.1
- 1966
Michelin agrees to make radials for Sears. Within four years Sears is selling a million a year.1
- 1967
Goodyear launches the belted bias tire, an extension of the old design. Firestone matches it within months.1
- 1968
Consumer Reports gives its top two spots to radials.1
- 1972
U.S. automakers switch to radials. Firestone ramps up, partly by converting its bias-tire equipment.1
- 1979
Firestone's plants run at 59% of capacity, and its U.S. tire business has burned more than $200 million in cash.2
- 1988
Firestone is acquired by its Japanese competitor Bridgestone.1
Sull's conclusion is the sentence I would hang in every boardroom: Firestone "failed not despite, but because of its historical success."1 Its processes were excellent at doing more of what had worked. Sull called the pattern active inertia: when the environment shifts, good companies respond by accelerating the very activities that made them great.2
Today, the challenge for companies is that they confuse what made them successful in the past with what will make them successful in the future.
Intel said no to the iPhone for good reasons
The same trap catches companies far more sophisticated than a tire maker in 1970. Before the first iPhone launched, Apple wanted Intel to supply a chip for it. Paul Otellini, then Intel's CEO, compared the price Apple was willing to pay with Intel's forecast cost and passed. In his words, it wasn't something Intel could make up on volume.3
By the standards of Intel's model, that was a disciplined decision. That is exactly the problem. As he retired in 2013, Otellini told The Atlantic that "the forecasted cost was wrong and the volume was 100x what anyone thought," and that his gut had told him to say yes.3 Some analysts argue Apple might have chosen a different chip design anyway. The lesson holds either way: the spreadsheet did its job perfectly, inside a premise about margins and volumes that the new market was about to break.
32%4
Five-year chance that a U.S. public company exits the listed market
5%4
The same risk fifty years earlier
100x3
Real iPhone volume against the forecast, in Otellini's own words
Nokia gives you a third version. For years it was the name most people associated with a mobile phone. In 2013 it sold its handset business to Microsoft for €3.79 billion, plus €1.65 billion to license its patents. Even at the end, the operations it sold generated almost half of Nokia's 2012 net sales.5 The old success was still paying the bills on the day it stopped being a future.
Why winning makes a company deaf
None of these companies was lazy. That is what makes success toxic: it rewards the habits that later hurt you. When everything is going well, nobody wants to correct anything. The people who ran the old playbook best get promoted. The customers who produce today's margin get the most attention. Data that contradicts the story arrives looking like noise, and noise gets filtered out.
What success tells you
- Our customers are loyal.
- Our process is the reason we win.
- The numbers prove the strategy works.
- Changing now would put the core at risk.
What it can hide
- They may be staying because switching is a headache.
- The process may be tuned for a game that is ending.
- Financial statements describe the past, not the next three years.
- Not changing puts the whole company at risk, only later.
I learned this in my own company. For years we were superb at surviving shocks. We kept improving quality, technology and price, and we were winning, beautifully, a competition that no longer existed. The client had changed what it was buying and told no one. The full story is in the essay I mentioned above. Here the pattern matters more than the details.
Five questions to ask in your best quarter
You can't wait for bad numbers to start this conversation, because bad numbers arrive late. The right moment is when results are good and the team still has energy and cash. These are the questions I put to leadership teams at exactly that point.
The success audit
Name why you won
Write down the three reasons behind last year's results. Be specific: a segment, a channel, a price point, a capability. If the list says "our people" or "our quality", push harder.
Turn each reason into a premise
Behind every win sits an assumption about the customer, the technology or the business model. "Our buyers will keep ordering through distributors" is a premise. Write it as one, so it is allowed to be wrong.
Ask who is not buying
Study lost deals, churned accounts and the customers who never called. Firestone's warning was not in its own order book. It was on Sears' shelves and in Consumer Reports.
Pick the number that would prove you wrong
For each premise, choose one leading indicator and a threshold. When the indicator crosses it, the premise goes back on the table automatically, without a debate about who is being negative.
Fund the alternative separately
Give a small, protected budget to the option your current model would reject, and judge it on what it teaches. Inside the normal budget it will lose to the core every time.

If you want a structured way to run this, the Strategic Entropy™ diagnostic scores five dimensions and checks leadership's view against the view two levels down. One of our use cases shows how it works in a company that looks perfectly healthy. And if you need someone in the room while the change happens, that is the work I do in operator-led execution.
A model never announces its expiry date
The trouble with a winning model is that it keeps paying until the day it doesn't, and by then the cheap options are gone. The next essay in this series, on the quiet window for reinvention, is about how fast that window closes. For now, one line from the reel is enough.
Don't let today's success become tomorrow's myopia.
Sources.
- 1Harvard Business School Working Knowledge (Donald N. Sull), The Dynamics of Standing Still: Firestone Tire & Rubber and the Radial Revolution, November 27, 2000.
- 2Harvard Business Review (Donald N. Sull), Why Good Companies Go Bad, July 1, 1999.
- 3Engadget, reporting Paul Otellini's interview with The Atlantic, Outgoing Intel CEO regrets not getting Intel CPU in iPhone, May 17, 2013.
- 4Boston Consulting Group (Martin Reeves and Lisanne Püschel), Die Another Day: What Leaders Can Do About the Shrinking Life Expectancy of Corporations, December 2, 2015.
- 5Microsoft News Center, Microsoft to acquire Nokia's devices & services business, license Nokia's patents and mapping services, September 3, 2013.
Keep reading
- Why Profitable Companies DieThe full essay on Strategic Entropy™, the Perception Gap and the Budget Test.
- Strategic Entropy™An early-warning scan for the assumptions your success depends on.
- Designed to SurviveDaniel's book on how to stop defending the past.
- A profitable company diagnoses Strategic Entropy™What the diagnostic looks like in a company that seems healthy.
Questions readers ask
Usually not because they stop working hard. Success rewards the habits, people and customers tied to the current model, so the company becomes very good at doing more of what used to work. When customers, technology or business models change, that excellence points in the wrong direction. Firestone in the radial-tire era is the classic case: fast, disciplined and wrong.
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