The "bring your own game" approach caters better to PC gamers because GeForce Now will be compatible with titles from your existing Steam, Origin, or Epic libraries. For $4.99 a month, subscribers can play their existing digital games on Nvidia's servers for up to six hours per month.
https://www.notebookcheck.net/Nvidia-GeForce-Now-has-this-one-major-advantage-over-XCloud-Google-Stadia-and-other-game-streaming-services.452974.0.html
Like shadow since years now ::)
Six hours per month would be very bad. I just checked it in the FAQs and there it says, that after a session ends, you just get moved to the front of the queue. "There is no limit to how many times you can start a new session in a day."
It's per session not per month, just to clarify the article