Proof of that comes from a “Join the Beta” promotion on the homepage of Steam suggesting you try Steam for Linux. There’s even a download link to get Ubuntu 12.04 LTS, which removes yet another barrier to entry.
With Gabe Newell’s clear hatred of Windows 8, this shouldn’t be a surprising move. We aren’t going to see another version of Windows appear for a few years, so in Valve’s eyes pushing Linux to gamers makes a lot of sense."
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