Personally, I doubt there will be a significant CD revival. I could write pages on this but I'll try and keep it brief
I don't think anybody really understands all the reasons behind the vinyl revival. However, it has been driven by today's young as well as those who were brought up with it. My belief is the format and tactile nature of vinyl has driven much of the interest and revival. The album artwork, the larger sleeves, the fact you can see something happening when you are listening to the music, the retro aspect, the nostalgia. The fact the format is associated with possibly the heyday of popular music (1960s/1970s).
CD never had that appeal.
After all, there has not been a cassette or 8-track
revival.
There is also the fact that all a CDP does is convert a digital code into an analogue signal. Modern devices such as computers and other devices do that just as well - we don't complain about using computers for everything else and the bits not being right.
However, there are, I believe, some CDs that are valuable, original non-barcoded releases, etc. Also, as you say CDs are SO cheap. It is generally better to buy a used CD off Amazon and rip it than buy a lower bit rate download.
All IMHO of course