Famous people used to appear in advertisements for products made by other companies. Increasingly they own the company instead, and the reason is the difference between a fee and an asset.
An endorsement is a rental with an end date
A traditional deal pays a fixed sum for a defined period and defined uses. When the term expires the relationship ends and the payments stop.
The value created belongs to the brand. Awareness built during the term stays with the product, not with the person who built it.
That arrangement suits someone with a short window of fame and no interest in operations. It suits nobody who expects to be relevant for decades.
Equity converts attention into a sellable thing
An owner holds a share of a company whose value reflects everything the attention produced. If the business grows, the stake grows with it.
More importantly, a stake can be sold. A fee cannot, and neither can a reputation.
This is the structural reason for the shift. Ownership turns a stream of publicity into a capital asset that survives the end of the publicity.
The operating work is bought in
Very few of these companies are run by the person whose name is on them. Manufacturing, distribution, regulatory work and retail relationships are handled by partners who do this professionally.
The celebrity contributes attention, a point of view and access to an audience. Those are genuine contributions and they are also the cheapest part of the business to supply.
Arrangements vary from a licensing deal that resembles an endorsement to genuine founding equity with capital at risk. The public cannot usually tell which is which.
Category choice follows margin and credibility
The recurring categories are cosmetics, drinks, apparel and wellness, because all of them carry high margins relative to production cost and tolerate a personality on the label.
Credibility matters more than expertise. An audience accepts a musician selling a drink and resists the same musician selling a mortgage.
Where the audience does not accept the pairing, the attention converts poorly and the venture ends quietly.
Failure is cheaper than it looks
Most of these ventures do not become large businesses, and the closures rarely make news because there is little to report.
The downside is limited when the celebrity's contribution was attention rather than money. The upside, in the rare cases where a brand becomes substantial, is far larger than any endorsement fee.
An asymmetric bet with a low entry cost is taken repeatedly, which is exactly what the pattern shows.