I have an Echo, 4 Echo Dots, one of every Apple Device, and a mix of other tech sprinkled throughout the house. I have already committed both my home and business to Sonos, and have zero desire to decommission those so that I can more easily play music from my Apple music library.
Do I wish that Sonos had a better/tighter integration with Amazon Prime or iTunes? Absolutely. However, I like the fact that it's platform agnostic. Apple could've solved a much bigger problem here, but instead chose to create a new one and solve that instead.