Also, Gabe Newell made it quite clear back then that Windows 8 wasn't really to his liking.
It seems they've now taken another step in this direction by joining the Linux Foundation.
Linux Foundation Site said:SAN FRANCISCO, December 4, 2013 -- The Linux Foundation, the nonprofit organization dedicated to accelerating the growth of Linux, today announced that Cloudius Systems, HSA (Heterogeneous System Architecture) Foundation and Valve are joining the organization.
The newest Linux Foundation members represent both nascent open source endeavors as well as established industry leaders. Companies from diverse markets, such as gaming, cloud computing and virtualization are seeing the value of Linux and collaborative development to put them out in front of competitors.
For example, Valve recently announced its plans to expand its Steam platform, with 65 million active accounts and games from hundreds of developers, into the living room with the Steam Machines project. An innovative living room device, the Steam Machines will be powered by a Linux-based operating system dubbed the Steam OS. At the same time, emerging cloud, virtualization, big data and device-driven computing companies are taking advantage of open development and collaboration to ignite innovation.
Source