Best answer by Ryan S
"At present, not all of Alexa’s voice commands work with the Sonos One, such as asking Alexa for a flash briefing, but an update will address this soon. "
That describes my issue. Certain skill commands are not working like the flash briefing or sleep sounds. So I will hope that info above is correct and an update will address it soon.
I will say I'm not having the same problems others are describing above like music not playing at all, or nothing after one song or problems with targeted commands like play music in kitchen. I have a Sonos Play 1, Sonos One and Echo Dot.
I can confirm this, some of the Alexa Echo abilities aren't working on the Sonos One right now. Flash Briefing is one of the ones that we're hard at work on and should have brought to the Sonos One as soon as we can. Some features are Echo only right now, and might not be available on the Sonos One, like the Messaging and Calling features. That may change in the future, but we don't have any specifics to share.