Re: My Hovercraft is full of eels.
But, seriously, take one step back, and realise that this is just another Stasi Wet Dream bugging device - there has to be a central server everything goes back and is recorded (for ever).
Never saw it like that! Storing audio takes a lot of space, storing text takes very little. If you can build voice recognition systems that can do a "stand up in court" level of converting speech to text.
Of course, text loses all sorts of information like tone and inflection (and background noises), and people tend to replace those with what they imagine fits.