I might misunderstand the exact definition of Saas, but I thought it referred to subscriptions specifically. I think GeForce Now is free, but just not particularly useful without having bought an nvidia GPU. Is there any sort of recurring payment aspect to it, or am I just assuming a more narrow definition of SaaS than you?
EDIT: I think I confused GeForce Now with the GeForce Experience or whatever the driver management/game overlay thing is. From searching, it definitely is a subscription service
Geforce Now is not really SaaS, the model is more PaaS (if you consider what you're actually doing - renting a gaming PC with a graphics card as a platform to run Steam/Epic/whatever).
EDIT: I think I confused GeForce Now with the GeForce Experience or whatever the driver management/game overlay thing is. From searching, it definitely is a subscription service