Andy Warhol's quote is about aspiration and perceived attainment. The average person is not aspiring to drink a gold flake truffle-infused Coke.

The implication is the lack of a rigorous class hierarchy in America. Not that the rich don't live different lifestyles or consume more. But that niche luxury products were considered effete and un-American.

(Andy Warhol was almost certainly also being ironic - that the richest people in America publicly shared the same trashy taste as average Americans).

The closest analogue today might be an iPhone. Rich or poor, if you want the "best" phone you have an iPhone. Sure, there are gaudier and more expensive phones out there. But you're essentially using the same product as the richest Americans.