What you say has the ring of truth, Chris.
My first thought upon reading your prognostication was that people would want to collect "hard copies". But upon reflection, I think the audio fidelity will have something to do with it too, just as 50s LPs are sought after, while 80s LPs are not.
Just to clarify, a lot of '80s LPs - especially in the punk and post-punk genres (not to mention 45s) - are quite collectible and rare. CDs have been collectible for a while now, especially some of the Japanese discs which are limited and almost instantly OOP.