The “Big Con” describes the confidence trick the consulting industry performs in contracts with hollowed-out and risk-averse governments and shareholder value-maximizing firms. It grew from the 1980s and 1990s in the wake of reforms by the neoliberal right and Third Way progressives, and it thrives on the ills of modern capitalism, from financialization and privatization to the climate crisis. It is possible because of the unique power that big consultancies wield through extensive contracts and networks as advisors, legitimators, and outsourcers and the illusion that they are objective sources of expertise and capacity. In the end, the Big Con weakens our businesses, infantilizes our governments, and warps our economies.