[pavel_lishin]

I read that and I think they're totally free to.

And they might. Which would be more frustrating to a user - their Sonos turning into regular speakers, or arbitrarily and randomly not functioning as expected?

Imagine the difference between your phone suddenly bricking itself, or random refusing to dial certain numbers.

[crummy]

Free to in what sense?

[pavel_lishin]

Free in the sense that they can stop supporting any streaming services on your Sonos device.

[ball_of_lint]

Free to in that if they did so, you would have no recourse according to this document.