People buying physical music and movies still makes sense today and why they will/should still be around many years from now: You get superior quality compared to their digital counterparts.
CDs are much, much better than Spotify and ****ty MP3s (unless you listen to hi-fi digital music). For vinyl records, people go for the warm, analogous sound that you don't get from CDs and digital audio. Also, there's a novelty of looking at big album jackets and coloured discs when they're being played on the turntable.
Movies on Blu-ray discs contain 20+ GB worth of video data that gives you the best (compressed) picture quality that no streaming service can offer. Those digital copies with the codes that come with each Blu-ray are a joke.
Books? Similar deal. Bookworms like sniffing old books and touching actual papers or holding a softcover/hardcover. Comic book nerds prefer the beautiful original colouring on good ol' paper rather the ugly digital re-colouring through a computer screen or a tablet.
As for games, well... Whether it's on physical disc/cartridge or the digital version downloaded and installed to the HDD/SSD, you get the same game. Thus, it's the same assets, the same textures, the same audio, the same whatnots.
Sony mentioned the GaaS are day and date on both systems. Thus, the multiplayer TLoU game would have been released on PC same day as PS5.
It is interesting how
Helldivers 2 has become the top PlayStation game on Steam for peak concurrent players on launch day beating GoW 2018 (81k vs 73k). I can see the window for PC ports getting shorter and shorter eventually.