I agree that it's more, uh, comforting(?) to physically own a CD or vinyl, but I don't understand the point of your post. Is it supposed to be negative that young people (supposedly) value ideas more than material goods? Shouldn't that be a good thing?
No. The "idea" of an mp3, along with the idea of "shitty, compressed, mass market, terrible" music that has led to a system where the artist gets fucked out of a lot of money is not a good thing.
Nor does this younger generation even make their purchases based on this "idea" you describe. They have no good intentions. They want their shitty mp3s and they want them now. There's no philosophical or existential thought process to what they are doing.