Sure, for real.

Of course, it isn’t like you can’t build yourself a small PC. I’ve got a build in a Fractal Design Terra with a beefy GPU, and that thing is barely bigger than a shoebox.

But building small is even more daunting than building large, so IMO it ties into the same angle of people wanting something that is premade and a product that just works, right down to the SteamOS operating system it ships with.