Those are features of Apple Monopoly rather than Apple Music.
https://support.spotify.com/us/article/siri/
https://support.spotify.com/us/article/can-i-use-spotify-in-...
"Hey Siri, play X".
Can you do this with Spotify? Or do you have to always say "on Spotify" for every request ever?
I’m not sure what part of the service you consider ‘inferior’ to Spotify (I personally dislike Spotify’s UI/UX), but Music’s iOS integration is really great. I can also use it in my android devices and Sonos stuff too.
I also find Music’s professionally-curated playlists (and radio stations now that there are a variety) to be far superior to any algorithm I’ve come across for music discovery.
On the other hand Spotify's "Discover Weekly" is vastly superior to Apple Music's "New Music Mix".