The idea that the self could become a resource has a precise intellectual history. Immanuel Kant's categorical imperative, formulated in the Groundwork of the Metaphysics of Morals (1785), drew the foundational distinction: rational beings must be treated as ends in themselves, never merely as means. This was not a sentiment. It was a logical deduction from the conditions of moral agency. A being capable of setting its own purposes cannot, without contradiction, be reduced to an instrument of someone else's purposes. The distinction between persons and things was, for Kant, the boundary on which all moral reasoning depended.
Karl Marx identified the first systematic breach of this boundary in the labor process. In Capital (1867), he documented how the worker's capacity for creative activity -- labor power -- was converted into a commodity bought and sold on the market. The worker remained formally free. No one was enslaved. But the substance of the worker's life -- time, energy, physical capacity -- was extracted as the raw material of someone else's accumulation. Marx called this alienation: the condition in which the products of human activity confront the producer as an alien power. The self was not abolished. It was hollowed out, its productive capacity redirected to serve purposes it did not set.
Foucault extended this analysis beyond the labor relation. In his 1978-79 lectures, published as The Birth of Biopolitics, he traced how American neoliberalism -- specifically the Chicago School economists Gary Becker and Theodore Schultz -- reconceived the human subject not as a worker selling labor power but as an entrepreneur managing human capital. The worker becomes, in Foucault's phrase, "an entrepreneur of himself, being for himself his own capital, being for himself his own producer, being for himself the source of his earnings." This was not merely an economic theory. It was a new form of governance -- what Foucault called governmentality -- in which the subject governs itself according to economic rationality, internalizing market logic as the framework for all decisions including those about the body, health, appearance, and biological duration.
The critical insight is that this self-governance feels like freedom. The neoliberal subject does not experience itself as dominated. It experiences itself as choosing -- choosing to invest in its appearance, choosing to optimize its health metrics, choosing to manage its biological data. The resource conversion operates through the medium of choice itself. This is what makes it structurally distinct from prior forms of extraction and what makes it resistant to critique: the critique appears to be an attack on the subject's freedom to manage itself as it sees fit.