I feel like Geforce Now has been growing quite steadily, they onboard new titles every week including some big ones like World of Warcraft recently and they've stood up streaming DC's in quite a lot of places now.

GeForce Now is pretty great.

Is it responsive enough to play action games? Noticeable lag is what kept me off of Stadia.

I expected lag and I haven't experienced it beyond an occasional moment like ... once a month maybe. I just attribute that to local internet issues and it stops and I just keep playing.

It is a surprisingly fluid experience.

Is the services that PlayStation Now uses publicly known? That's the only streaming service I've used so far.

As someone who used to work on that platform back when it was still called PlayStation Now, no it is not. There's a few rumors and alleged leaks though.

MS seems to be continuing to push xCloud with Games Pass. It has been useful when playing games with my friends a few times.