https://www.cnet.com/news/nvidia-geforce-now-beta-has-1-million-gamers-on-waiting-list-gdc-2019/

But the company's expansion plans, via its GeForce Now Alliance partnerships, sounds like more than just growing internationally beyond the 15 data centers currently in North America and western Europe. (The first partners are Softbank and LG Uplus for rollouts in Japan and Korea in 2019.)

The way CEO Jensen Huang was talking, it sounded like the company is more interested in enabling and hosting the architecture that will enable other companies to deliver their own, custom GeForce Now-type options. In other words, you'd subscribe via your internet or cell service provider rather than through Nvidia. That would explain why it hasn't already launched, as well.