By focusing a concentrated attention on
everyday items, Warhol demonstrated that anything and everything can be and could be art. This explains why a banana stuck to a canvas sold for over $100,000!
As Cole Porter said, "Anything Goes!" I'm sure that he and Andy would have been fast friends (and probably rivals) if they had been contemporaries.
Warhol was famous for his portraits of famous people, for his business savvy, for being openly and non-politically gay, and getting shot by a extremist who claimed she was a feminist, a wound which ultimately killed him.
To my mind, Andy created a new artistic paradigm comparable to what the Impressionists and the Abstract Expressionists accomplished. He gave us a new way of seeing and of thinking about what art might be.
He thought different.