Indonesia capped ride-hailing commission at 8 percent. Founders got no vote.

Marcus Aurelius wrote to himself at Carnuntum, in a campaign tent on the Danube, while the frontier of the empire he governed was coming apart. The Marcomanni were across the river. Plague had already walked back from the east through his legions. He was the most powerful man alive, and most of what threatened him arrived on a schedule he did not set.

So he built the one thing the Marcomanni could not cross the river and take. He called it a fortress. The scholar Pierre Hadot would later name it the inner citadel: the ruling part of a person, the seat of judgment and choice, walled off from what happens to it rather than in it. The walls of Aquincum could fall. The citadel stood somewhere else.

A founder in Jakarta learned where in the small hours of the first of May, 2026. That was Labour Day, and President Prabowo Subianto used it to announce that the commission a ride-hailing platform may take from a motorcycle driver would be capped at eight percent. It had been as high as twenty. Drivers would keep a minimum of ninety-two percent of every fare, up from eighty, backed by a presidential regulation and, for good measure, by a state fund buying onto the share register to make compliance stick. GoTo’s shares fell almost six percent on the plan. The founder did not vote for it, was not consulted on it, and could do nothing about it. His unit economics had been rewritten overnight by a man giving a holiday speech.

The outer wall was breached, and no Stoic pretends the wall still stands when it is rubble. The margin was gone. The model he had raised money against, the deck he had walked investors through, the number every projection leaned on, all of it repriced by a paragraph he never saw.¹

What the regulation could not reach was the room where he decided what to do next.

That is the citadel, and it is the part most founders give up first. The breach in the wall becomes a breach in the man. The panic gets in. Then the contempt, for the regulator, for the drivers, for the market that allowed it. Then the decision made from the floor of that contempt, fast and vengeful and wrong. The government took his margin in an afternoon. He spends the following month handing over the only thing the government could not legislate, which is the quality of his own judgment.

The mind which is free from passions is a citadel, for man has nothing more secure to which he can fly for refuge and be inexpugnable.

Marcus watched this happen to abler men than himself. “The mind which is free from passions is a citadel,” he wrote, “for man has nothing more secure to which he can fly for refuge and be inexpugnable.” Inexpugnable. The word says nothing about being comfortable or spared. It says only that the place cannot be stormed from outside. The storm was always allowed to come. The gate was only ever openable from within.

This is the demand the philosophy actually makes, and it is harder than any spreadsheet. Prabowo can set your take rate. Only you can decide whether the loss also gets to set your character for the quarter that follows it. The wall is masonry and it belongs to the world. The citadel is conduct and it belongs to you, and it stays yours precisely on the mornings it would be easiest to abandon.

The wall is masonry and it belongs to the world. The citadel is conduct and it belongs to you, and it stays yours precisely on the mornings it would be easiest to abandon.

Marcus lost cities on that frontier and kept the citadel until he died in the field. The founder still has his.