The simplest definition of "quality" is whatever the public is willing to pay the most for. Apple doesn't sell $300 laptops, but it makes more money selling laptops than anyone else does - meaning either that they sell devices on the basis of glitz, or that they sell devices which perform well and remain valuable when used. I didn't buy an expensive model of Mac, but years after I bought it, PC users who see it are struck by it.
Anybody who tries just glitz without underlying value fails. Remember most PC users trying to pimp-up their PCs with plastic in the face of Apple's design successes? Remember Apple's own Mac Cube? It was very nice and glitzy, but it cost far more than equivalent Mac hardware. Not many people have that much money to shell out for looks.