The fraud is the forecast
Michael Mauboussin was dissecting return on invested capital when he dropped a line that should be tattooed on every analyst's forehead: companies act like they're in a silo, that everybody else in the world is stupid. Only their company is mapping out a pathway to the future. The delusion runs deepest in growth projections. Analysts estimate earnings growth for individual companies by listening to management, studying the special sauce, calculating the TAM. Then someone does the arithmetic, adds up all those growth rates across the sector, and discovers the market would need to be three times the size of Earth's GDP to accommodate everyone's dreams.
What Aswath Damodaran calls the big market delusion. The macro story might be right; electric vehicles will dominate, AI will transform everything, China will grow forever, but that doesn't mean every company in the space deserves a high valuation. The error compounds when competitive responses get ignored. Companies model their future as if competitors will sit on their hands, as if pricing power is permanent, as if market share can only go up. It's like planning a war where only your side gets to shoot.
The Romans had a version of this problem. When grain subsidies started in 123 BC, nobody modeled what would happen when every politician discovered they could buy votes with bread. They assumed rational governance, careful fiscal management, occasional adjustments. Instead they got the ratchet effect, every attempted reform became the base for larger expansions. What started as subsidized grain became free grain, then free grain plus olive oil, then an imperial fleet dedicated to feeding Rome. No politician ever successfully repealed the dole. The beneficiaries organized, they voted, they made careers out of defending their bread. The constituency for fiscal discipline was diffuse and weak. You literally cannot take bread from people who are hungry, even if the bread is what made them hungry.