On the higher-end Cambridge Audio, Audiolab, Cyrus and many others are only making CD transports.
This can be advantageous as more resources can be allocated to the laser and CD reading mechanism in general, as well as more robust casing, all to reduce jitter. More SACD capable players also go this route,
On the other hand a CDP can also be improved by hooking to a better external DAC.
These are options, but up to the listener to decide what makes sense and what does not.
One maker who has bucked the trend however is Marantz.