@facten I'll spare you the economics lesson, but:
CD sales are a small fraction of what they used to be and still declining. Manufacturers of CD players, CDs and creators who publish on CD look at these numbers to determine their path. As that number decreases fewer consumer CD players will be manufactured and artists will choose another means to deliver their work.
Super high-end manufacturers of audiophile CD transports do not care if last year 1 million CDs were sold versus 15 million a few years before. They're only concern is that the small number of audiophileswith very deep pockets want to buy a handful of these super expensive devices.
A small number of high-end CD transport manufacturers do not affect and are not affected by the millions of CDs that may or may not be sold.