The positive I'm taking away from the WWDC is that MusicKit is now available so that other companies (RTI / C4 / Yamaha / Denon etc) can easily integrate Apple Music into their products. That alone will be one 'exclusive' that Sonos won't have in time...
This industry is not getting cheaper and cheaper, we're simply convincing ourselves that we have to push the cheapest option to customers. #makesonosgreatagain