Fun-to-Sustainable Business Flywheel
Turn enjoyable work into durable products backed by recurring revenue
- Difficulty
- Moderate
- Time to result
- ~months to results
- Steps
- 6
- Confidence
- 94%
This flywheel begins with an activity the founder finds intrinsically enjoyable, which supplies the energy needed to keep experimenting. The activity is then made public through teaching, consulting, writing, or another direct format. Real audience behavior—not abstract market speculation—reveals which parts are valuable enough to package and sell. Revenue gives the activity longevity and funds higher-quality delivery. Once one format proves demand, the same expertise can expand into adjacent products such as courses, books, software, publications, or services. Each product becomes both an offering and a test of what customers value. The method is not simply “follow your passion”: enjoyment provides persistence, but repeatable demand and a workable revenue stream determine whether the activity becomes sustainable.
Origin
Wilmott described repeatedly turning enjoyable projects into businesses, beginning with university courses that led to self-published books, software companies, publishing, and quantitative-finance education.
Core principles
- 01Start with work you genuinely enjoy
- 02Expose useful hobbies and expertise to a real audience
- 03Productize demonstrated demand rather than imagined demand
- 04Use revenue to make the activity durable
- 05Let one successful format generate adjacent products
How to run it
- 1
Start with genuine interest
Select work that is enjoyable enough to pursue before its commercial outcome is certain.
Pro tip Favor interests where you already produce useful explanations, tools, or results for others.
Watch out Enjoyment alone does not establish market demand.
- 2
Make the activity public
Teach, demonstrate, consult, publish, or perform the work for a real audience.
Pro tip Begin with a low-cost format that creates direct audience feedback.
Watch out Do not invest heavily before observing how people respond.
- 3
Detect demonstrated demand
Look for repeated requests, referrals, purchases, or unusually strong word of mouth.
Pro tip Treat unsolicited demand as a stronger signal than compliments.
Watch out Audience enthusiasm that never converts may not support a business.
- 4
Package the value
Turn the most useful material into a course, book, service, software product, or other repeatable offer.
Pro tip Productize the outcome customers value, not every part of the hobby.
Watch out Premature complexity can bury the simple offer that created demand.
- 5
Create a revenue stream
Charge for the offer so the work can continue, improve, and become less dependent on personal subsidy.
Pro tip Price according to customer value and delivery cost rather than habit.
Watch out Revenue should support the activity, not destroy the qualities that made it enjoyable.
- 6
Expand adjacently
Use proven demand to launch closely related formats or products for the same audience.
Pro tip Let each successful product provide distribution for the next.
Watch out Avoid unrelated expansion that lacks a shared audience or capability.
In the wild
Wilmott and university colleagues began by offering courses to finance professionals. Strong demand led them to turn the material into a book, self-publish it, and sell it worldwide through courses and word of mouth. The same base of expertise later supported software and additional publishing activities.
→ One enjoyable teaching experiment developed into several related, revenue-producing businesses.
An analyst who enjoys explaining a narrow market publishes a short weekly note. Readers repeatedly ask for deeper datasets and decision tools, so the analyst packages those requests into a paid research subscription before adding workshops or software.
→ Audience pull converts an enjoyable publishing habit into a sustainable expert business.
Common mistakes
Confusing enthusiasm with demand
A founder's excitement is the starting input, but purchases and repeated use are the evidence that the activity can support a business.
Building too much before selling
Large upfront investments weaken the feedback loop; first expose a small offer to real customers.
Expanding beyond the proven audience
Adjacent products reinforce the flywheel, while unrelated products consume attention without inheriting demand.
Is it for you?
Best for
It is best for independent experts, educators, and creators with useful knowledge and an existing way to reach potential customers.
Not ideal for
It is not ideal for founders who need rapid venture-scale growth or whose preferred activity has no demonstrable customer value.
From the transcript
“my whole business model all my life has been do something which is fun and then and then I accidentally or I always have this…”
“It becomes more long last thing and sustainable if there's a revenue stream behind it.”
“we thought, let's let's why do we give some courses on teach people in the city, and they just was phenomenally successful. So we set…”
From the episode
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Paul Wilmott