Individual talent and initiative was recognized as an intangible quality of persons in economics back to at least Adam Smith.
Perhaps because of this, not all theorists recognize individual capital as being as essential as labour, or distinct from social or political influence, or from instructional capacity.
These theorists often refer to "intellectual capital", which more properly describes a debate or locus of complexity that arises when individuals take key instructional roles.
However, a great many celebrities are clearly not "intellectual" achievers nor notable for any cognitive or analytic powers, e.g. Kim Kardashian, professional sports figures or other athletes.
While they may through sheer exposure become involved in causes or controversies (as Paris Hilton did in the US presidential election, 2008) it's clearly not correct to label all individually unique talent or economic value as being an "intellectual" asset.
This failure to distinguish individual's objectively observed economic value (the power to promote or publicize products, draw attention to causes, etc.)
Many enterprises, for instance, a music conservatory or circus school or creative writing coach, are clearly making a living on the identification and (somewhat) measurable enhancement of the individual.