Like apple did, when they unlocked that infamous IPhone...
Oh wait
Sure, the data that they collect is mostly avaible to agencies like FBA.
But the argument is about using microphone, and despite Android being fairly open platform, where you can controll every single aspect of the device all the way down to assembly, I have yet to seen the smoking gun that objectively proves that googlePlayServices, or whatever, listens to you 24/7 and transmits all that to the servers.