Clothes as a signifier of wealth has dropped over the last quarter of the 20th century as the ability to dress down at work was a form of displaying power at work. For the insanely wealthy, they but designer clothes, but they are buying more for the better materials and workmanship; branding on the clothes is understated and can usually requires an education by the people looking at it.

There are some brands who are for the aspirationaly wealthy who do display their brands more conspicuously, but they aren’t for the billionaires.