I Teut -you so:
http://teut.blogspot.de/2017/03/why-old-publishers-dont-get-it.html
And now this:
https://www.newsledge.com/playerunknowns-battlegrounds-sales/
7 million sales. Most played game on Steam. Oh well.
Also:
https://venturebeat.com/2017/08/17/pc-gaming-weekly-the-magic-of-the-398-million-survival-game-market/