Hi Mike
A basic Intel CPU can be picked up for about $40, a top of the line Intel CPU costs about $1000 however they look identical.
A modern arranger has better sounds and features then the previous versions, but has fewer components.
Look inside some industrial machinery and you will find boards the same size as those in the Korg, but they cost $20,000.
It’s not the number of components or sizes you pay for, but the development, (Hardware & Software) tooling up for production and manufacturing.
Expect to see less costing more continuing in the future.

Bill