Rather than upgrade my PC with an expensive video card, I bought a subscription to NVidia's GeForce Now service. For $100, I get 6 months of streaming games from a RTX 3080-enabled PC in a data center.
Considering a gaming PC at that level would cost over $1000, it seems like a decent deal. Yeah, if I use the service long enough, I could have bought the card, but by that point the hardware would be obsolete. Plus, if I want to game on my PS4, I can drop the streaming service.
You have to buy the games on a separate service like Steam, but that's fine by me.
The streaming works well, and the games look pretty at 1080P. I'm playing Cyberpunk 2077 with the graphics turned up.