If subscribed to Tidal music streaming service, you can link up to Sonos in the Sonos app, and you can add it to Alexa via the Tidal skill. There is no option to add it to Google Home, and apparently that’s because it is not supported.
No problem - my Sonos One stereo pair runs Google Assistant, but I have an Echo Dot sitting next to them, and it’s set to use the Sonos speakers as the default music output and Tidal as the default music service, so I can just say “Alexa, play (title)”, and it plays from Tidal on the Sonos speakers.
But if I say “Hey Google, play (title) from Tidal”, it thinks for a long time with the light flashing (7-8 seconds), then says “Ok, playing (title) on Tidal… Sorry, it looks like Sonos isn’t available right now.”
Probably the issue is simply that Google Assistant doesn’t support streaming from Tidal. But the response is misleading, and indicates a deeper bug that I’ve noticed before, that the error “Sonos isn’t available right now” is frequently offered as a generic error message by Google Assistant when in fact that is not the problem.