On: Court denies FTC last-ditch attempt to stop Microsoft buying Activision Blizzard

Microsoft owns the Windows APIs that Valve emulates, as they don't manage to convince game developers targeting Android to also bother with GNU/Linux.

I'm not surprised, given the fragmented nature of Linux in terms of distro, packaging, and libraries. Given the low number of Linux gamers, there is probably no business case to deal with the support effort.