I think it’s due to “used games” market about 80%. Some people just like having physical media that can’t be taken away from them; others don’t care and are through with the game for a lifetime after they beat it/grow weary of it. I personally have tons of old games and kind of stopped buying new stuff after PS4. One day you’ll go to download “Gulliver’s Golden Adventure” for nostalgia and Steam will tell you to “fuck off, that game is gone”, but that won’t happen if you have it on vinyl