Unless Sony releases a launcher and has the games exclusive there.Almost all PlayStation games are available on Steam. That would be a PR disaster
Or, and they already did this before, they block their games on Xbox hardware. Yes, they can do that, as evident by them blocking their games from GeForce.
![www.purexbox.com](https://images.purexbox.com/1dcab3b8b1707/1280x720.jpg)
Sony Still Blocking Games From Xbox Users On NVIDIA GeForce Now
God of War the latest example
![www.purexbox.com](https://images.purexbox.com/site/favicon/32x32.png)