Gaming companies get DHS to combat radicalization of online gamers
arstechnica.com
arstechnica.com
It is only the stigma around surveillance that's keeping them from expanding these efforts (faster) to phone networks, public transport, chain restaurants, and eventually all public spaces.
In fact it's already starting:
https://www.theverge.com/2012/12/10/3752318/microphone-surve...
https://www.wired.com/2012/12/public-bus-audio-surveillance/
https://www.usatoday.com/story/news/2016/03/24/seen-and-hear...