Sonos is at an impasse, and it’s mostly Apple's fault. When what is now the largest cell phone maker in the world forced headphones wireless by removing the jack from the iPhone, the writing was most definitely on the wall.Folks used to pile around a stereo, home theater, or pair of computer speakers in their houses, but they'd all too often use a plastic pair of junk buds that came with their iPhone (or iPod, or Walkman before that) to listen on the go. With its $150 AirPods—and subsequent AirP...