Now, it is quite likely that you have no interest in at least the vast bulk of those, because they're obscure bands from my youth, live recordings of acts you don't care about, experimental music from the 80s, etc.

But rental access to the RIAA machine is a far, far cry from "all the world's music".

As for access, well. To each their own. I subscribe to the cliche that if you don't own the substrate, you don't own the data, and it can go away against your wishes. Now, Spotify an friends don't seem to play games like the studios do with Netflix, but that's almost certainly a matter of a business environment that doesn't encourage it, not "dedication to serving music lovers" or whatever.

It isn't that I need to "own" music. I don't know what exactly that's even supposed to mean in a world of bullshit IP laws that make less sense daily. It is that bits on your own platter is the only way to ensure your own continued access. And again, maybe you don't care - maybe the menu is more important for you than the particular flavors on it. But I know I'm not the only one who likes listening to things that are utterly unavailable on any service, for streaming or "purchase".