I think it all relates to demand, that will effect part and production cost, which in turn effects end cost to the customer. Anything unique is usually not going to be cheap in a very established market place like audio. So that price effects sales figures, then in turn effects life span of the product.
I can speak from experience, as our SSA Xcon subwoofer, (currently not in production) was somewhat unique and was at the top of its specific market segment in many ways. But what made it unique and better, was the motor. It consisted of a very expensive coil, a crap ton of steel, machined in shorting ring, and a large magnet. Those things alone drive our cost way way up, making it almost too expensive for us to make. Its costs per unit was percentage wise, very close to the bigger SSA Zcon.