You're forgeting capitalism.
Companies are in business to make money. If they could put out a product that was cheaper to make but yet still rival a currently available product in terms of pure performance, they'd charge a price closer to that of the currently available product. In this case, they aren't. $23,000 speaker cables are not reflective of the real world. Class AB amplification is.
[This message has been edited by Kevin C Brown (edited February 14, 2004).]