Steam OS has that killer app that Ubuntu doesn't

When one buys an Ubuntu PC he can’t do a lot that a Mac or Windows user can do, but when someone buys a Steam OS game console, he can do much more than what a PlayStation, Xbox or Nintendo user can do. Steam Machine user won’t have to open their laptops to get the work done – which they have to do when they are on other game consoles.

http://www.muktware.com