A more apt explanation for this is Baudrillard's conception of sign value. (Veblen initially thought out parts of it through the concept of Veblen goods, but it

A more apt explanation for this is Baudrillard's conception of sign value. (Veblen initially thought out parts of it through the concept of Veblen goods, but it was Baudrillard who took this idea to the extreme). The value is not created by any utility or scarcity, but is derived by the system of signs (prestige, class symbol, brand) created in consumerist societies. This system of signs is often self-reinforcing, since sign values themselves are "in association" with other sign values, rather than having cause-and-effect chains and physical processes. And it's "free-floating" just like the current monetary system of floating currencies are.