Unless it's reasonably priced who is the market for this box? If it's at 499 - 599 then it's probably selling well but at 799-899 I'm not sure who would buy it. If it's your first computer you still need more gear like screen, keyboard and mouse etc.
People who want to play video games would buy it. While us enlightened Computer Intellectuals may appreciate that there is no difference between a console and a PC, the majority of naïve computer peasants will much prefer something with the word “console” tagged on that boots straight to a game library. As for the keyboard and mouse thing, there's this other announcement they've made called the “Steam Controller” which addresses that issue.
