Who Governs Whom
Europe reached ChatGPT with a platform law, not its AI law. That is the pattern everywhere: the instruments that actually bind are trade law, market access and procurement, not AI acts.
THE API LAYER
JEAN JACQUES
JANSE VAN RENSBURG
Compounding intelligence, capital, and organizations.
Essays on AI systems, private equity, and AI sovereignty. Always free.
LATEST / 02 SEPT 2026
ESSAYS
The Aircraft Is Not the Product
In an air taxi network the binding constraint is energy, the capital sink is the airframe, and the margin sits in the one layer no regulator has to certify. That gap is the whole investment case.
Regime Change: The Interregnum
The rulebook that decides what counts as an asset is being rewritten in four ledgers at once. The operators who preposition their collateral before the rule changes are the ones the new regime pays.
Nobody Is Actually Building
Almost everyone you think you are competing with has bought a tool and stopped. The gap between adopting AI and building AI-natively is where the next multiple sits.
Intelligence Meets Resistance
Capital converts into intelligence almost without friction and cannot convert into transformers at all. That asymmetry is where the next decade of returns sits.
The AI Sovereignty Playbook
How to stop renting your thinking and start running infrastructure you control. Three layers, real numbers, primary sources. For founders and operators who cannot afford to wake up locked out of their own stack.
The Content Factory Thesis: Capital-Efficient Growth in the New AI World
The SelfBuiltSystems master thesis. Attention has unit economics, distribution has become a capital asset class, and here is the machine that industrialises both.
The Mind of Jean Jacques Janse van Rensburg: An API for Working With Me
The API layer for working with Jean Jacques Janse van Rensburg: AI systems, private equity, AI sovereignty, and compounding at four scales. What I am interested in, how I think, and what I am building.
THE STACK
INTERFACES
01 / READ
The essays
Bold conjecture, ruthless criticism, biweekly. Start with the API essay above.
02 / BUILD
SelfBuiltSystems
Frontier AI systems and private AI infrastructure for founders and firms. Access is by application.
selfbuiltsystems.com →03 / INVEST
Capital & portfolio
Business and AI strategy inside a private equity environment. Operators first, investors second.
How I work →04 / ADVISE
Advisory call
$1,000 / hour. The price is a filter, not a revenue line. Come with a specific problem.
Book →Separate signal from noise.
Essays on AI systems, private equity, and AI sovereignty. Always free.