> streaming sites do not have a full archive of the music out there

True, but it's way less common to want to listen to a specific piece of music than it is to want to watch a specific film or TV series. There's also way way way more music out there than there is film or TV, so it's again less of a problem.

If I want to listen to music I just say "hey google play some music" and it gets some random music based on my tastes that is generally pretty good. I rarely say "hey google play this specific track". Generally when I'm educating my kids ("It's cooooming home, it's coming, England's coming home").

For film and TV there's really not that much good stuff out there. I hear about a specific series, say Severance. Oh it's only available on Apple TV and I only have Netflix, Disney+ and Prime. Piracy it is then!