What is the market for this device?
Steam gamers that don't currently meet the average performance of this device probably can't afford it.
Steam gamers with technology better than this device already have superior hardware and it would be a downgrade.
XBOX/PS5 gamers already outperform this device, and have streaming services and a mature platform to play on.
So, Steam players that have expendable cash, room in their living room, etc?
Also, I setup my Steam Deck to my TV, and it took about 15 minutes of troubleshooting to get working (Had to change resolution setting). Hopefully the Steam Machine works better out of the box!