Surprised I don't see more computer sharing boxes

One thing that I'd like to see is a Chromecast / Steam Link / OnLive type device that would extend a workstation over ethernet for computer sharing complete with multi display and sound support.

You'd buy a really hot computer and share it to multiple stations in your house.

Then you could put your really noisy computer somewhere it doesn't bother you.

The technology is here, just make it cheap like a Chromecast and make it easy with simple configuration.

And not proprietary like Teradici PCoIP... Why does stuff like this have to cost an arm and a leg?