What Happened To The Brand Ambassador

There was a period in Indian advertising when signing the right face was the single most consequential marketing decision a brand made in a year.
The brand ambassador has not gone away, but the deal behind it has broken into so many pieces that the original logic barely survives.
What a brand ambassador used to buy
Transfer and time. A long exclusive association let a public reputation slowly attach itself to a product, which is a slow effect that needs years rather than campaigns. Exclusivity was the mechanism, because a face associated with nine brands transfers nothing to any of them.
What replaced it
Shorter deals, more of them, and a roster instead of a figure. Category exclusivity often survives while overall exclusivity does not, so the same person appears across unrelated categories within a quarter. Add a creator layer underneath and a brand can be paying forty people to say broadly the same thing.
That is not a strategy. It is a reach buy dressed as an endorsement, and it is priced like the second while delivering the first.
Risk drove some of it. A single long association concentrates exposure in one person’s behaviour, and a roster spreads that. But spreading the risk also spreads the effect, and most brands have taken the protection without admitting they gave up the mechanism.
Where it still works
In categories where the customer cannot verify the claim. Jewellery, financial services, health and insurance still get real value from a long association, because what is being borrowed is accountability rather than attention.
Everywhere else, the honest question is whether the brand needs a famous person or simply needs to be seen, because those two problems have very different prices and only one of them requires a contract.