Seriously, how in the WORLD is this patentable. Movie theatres, stadiums, high end home AV has all had this forever. What a trash headline too. "Google doesn't

Seriously, how in the WORLD is this patentable. Movie theatres, stadiums, high end home AV has all had this forever. What a trash headline too. "Google doesn't want to pay for Sonos technology"... What innovation is this? Speaker groups - has no one used a high end AV system. Zone A Zone B etc, and you have a remote etc for all this?