I think I can answer that: because vinyl now feels like timeless artifacts while CD's feel disposable and cheap.
We thought vinyl was going the way of the dinosaur when the CD came, but now that they are back it feels like they are here to stay. Both vinyl and cds were bought to get the music the first time around. CD had no trouble displacing vinyl for the quality of the sound.
But this time, when it's more about the cover art and the ritual of listening, than it is about the sound, I don't see how something could display the LP.
I know a lot of vinyl buyers now that buy the albums but then listen to the streamed music. Just to hold the album but have the convenience of digital.
I would even say that CDs really are somewhat disposable and cheap, they wear down after ~10 years and you often get scratches which cause your tracks to do the endless looping skip-skip-skip. I don't know how many DJ's I've heard play a scratched/skipping track, whereas Vinyl only skips if your tonearm weight is out of whack, the stage is bouncing, you accidentally bump the turntable (drugs are bad, mmmkay), or something physically gets on your record while it's playing. You can even see where e.g. the quiet sections are on your record, a bonus when mixing if you don't/can't memorize your music.
I've been DJing various Techno genres with Vinyl for ~15 years and I've watched the scene shift towards CD and MP3 devices, yet turntables (Technics SL-1200 or thereabouts) are still almost always guaranteed to be at most dance venues (often with CD-DJs hooked up nearby). I also somehow prefer carrying my music around with me, it forces me to pick out ~50 pieces and then lug them behind me to the event, arriving all sweaty and out of breath because that shit's heavy. But it somehow gives me a sense of accomplishment even before I lay down the first record. And I know that my records will play, as long as the mixer isn't totally destroyed.
Well UV light and oxidation cause disc-rot[0], so even if you leave them in their cases, they will eventually go bad. Therefore the only choice is keep them in a temperature and light controlled underground environment. Self-burned media tends to rot even faster.
And my point was mostly that if you're DJing with them, it's hard to keep them in pristine condition.
We thought vinyl was going the way of the dinosaur when the CD came, but now that they are back it feels like they are here to stay. Both vinyl and cds were bought to get the music the first time around. CD had no trouble displacing vinyl for the quality of the sound.
But this time, when it's more about the cover art and the ritual of listening, than it is about the sound, I don't see how something could display the LP. I know a lot of vinyl buyers now that buy the albums but then listen to the streamed music. Just to hold the album but have the convenience of digital.