Hi @npreining
Apologies - I misunderstood your question, and also took the Sonos Five part of your question as a separate enquiry when in fact it wasn’t.
Alexa control of (voice-enabled or not) Sonos devices is supported anywhere you can run Alexa on a device: Control Sonos with Amazon Alexa
However, Google Assistant control of (voice-enabled or not) Sonos devices is only supported in regions permitted by Google: Set up a Google Assistant device to control Sonos
The Sonos Five has no microphone so it’s unable to run any assistant, but can be addressed (commands sent to it) by any supported assistant - Alexa, Google Assistant or Sonos Voice Control.
So my statement is correct, but incomplete: I should have specified that the feature is only available in supported regions - apologies again for any misunderstanding. Google Assistant is the only voice service to have this restriction in relation to controlling Sonos via non-Sonos devices.
Unfortunately, this is still out-with our control - I recommend you contact Google to let them know your interest, and to use Alexa in the meantime.
I hope this helps.