Valve has already won. I've owned a computer since the 1980's, and gamed on computers non-stop since then. I already have a steam library of over 1,200 games. I have never owned a console. Although once in my youth I saved up $100 to buy an Atari 2600, but then blew it all playing Defender at the arcade. Living room is for television. Man-cave is for gaming on triple 30" monitors with a custom water cooled desktop computer that the consoles could only dream of powering, with a library of games available that puts the consoles to shame. Not to mention the portability of steam games. I can install and play them on desktop, on my Alienware m17x r3 laptop in a hotel room or back seat of a car, or on my Alienware m11x r3 laptop on the tray table as I fly across the country in an airplane
... one account, many devices. It's nice. Consoles lose in terms of power (can't run triple 30" monitors), price (five game bundles for $5 are frequent), selection (thousands of games), convenience (download easily), sharing (share games with friends with the new steam family share plan), and portability (try gaming with a console in the back seat of a car?).