I think it’s worth checking out some diy alternatives that get the job done. I built my own “steam box” with some cheap Ali Express parts (Elsa 5700xt and Erying motherboard with core I9 equivalent engineering sample) to great success. The OS is key. I’ve found two that work very well:

chimeraos.org (requires AMD GPU) github.com/ublue-os/bazzite/ (Works with Nvidia but it’s unstable using steam full screen at times)

I’ve had a great level of success with ChimeraOS so far.