Why would anybody buy this?

Every console offers something unique:
Sony has exclusives.
Nintendo has exclusives and offline Multiplayer.
XBox has the gaming pass .
All consoles offer better graphics than their PC counterparts because games are built to run optimized on them
You own your fucking games on consoles if bought on a physical copy

Why would anybody buy a Steam machine?
Its a non-customizable PC with no exclusives, no games can be bought in a store.