Consumer Demand and Modern Worship

Get Religion has an intriguing post on consumer demand and the modern Christian worship experience.  While it is written primarily from a Protestant perspective, much of its sentiment applies to the average Sunday mass, as reflected by a comment on one of Amy Welborn's related posts:

[I]n a world that possesses the C Minor Mass, the Icelandic Sagas, and Albrecht Durer, where does Dan Schutte, the poet of "Footprints" and Thomas Kinkade fit in? I know it's a stupid question to ask but did mediocrity exist in the Garden, or was it a consequence of the Fall of Man? Who takes the blame for Thomas Kinkade? 

Rob