Microsoft and Sony regularly give away their 1st party titles as part of Xbox Live Gold or PS Plus subscriptions. Also they give access to many of their games through Game Pass and PS Now. Sales figures would be tricky to report or an inaccurate representation of how much the game has earned or been played.
http://www.youtube.com/watch?v=F1gWECYYOSo
Please Watch/Share this video so it gets shown in Hollywood.