A report has estimated that the Epic Games Store has given out more than US$2,000 worth of free games to subscribers since December 2018. Over 100 titles have been offered gratis, with GTA V being the latest. Fortunately for Epic, the company can subsidize this loss with the US$1 billion made by the mobile version of Fortnite alone.
https://www.notebookcheck.net/Epic-has-given-away-over-US-2-000-worth-of-free-games-since-2018-but-fortunately-has-now-made-more-than-US-1-billion-with-Fortnite-mobile.465828.0.html