I can agree with the persepective that if tastes in our culture were more refined and discerning, then there would logically be a greater number of people interested in "audio as art." Remember, however, that the demand side is only part of the equation, and many would argue that it has a lesser influence than supply side effects. So in fairness, let's consider the supply side of this situation.
I have argued here, and in other threads, that the rate of significant innovation in high-end audio/music reproduction has been so glacially slow that relative to other consumer goods, high-end audio now offers extremely poor value for the consumer dollar. Relatively speaking, there has been significantly more innovation in the A/V, home-theater oriented segment of the market and this is where consumers have flocked with the dollars that they are willing to expend for this type of product. From a value-added perspective, their behavior is only "rational," whatever that means.
Understand that their choice doesn't reflect my values and I'm not arguing this from a HT enthusiast's point of view, I don't even have one and I too think that they're silly. But why is it so easy to demonize individual consumers, yet not look critically at the behavior of the firms that make up the high-end audio industry?