Even if they manage to get big players like Spotify to develop apps for them, a lot of people - at least on the Android side - have smaller, niche apps for audiobooks and podcasts that would never bother to port their apps to GM services. Heck, even Apple Music and YouTube Music wouldn’t bother. I smell an upcoming BOGO deal on their overstocked dealerships, just before they get another bailout check.
I also noticed a gap, and I’m wondering if it’s where the ad banner is now. I really hope not and that this is just a visual bug, because it’s pretty glaring and distracting.