Linux is still a small share of the Gaming market, I don't think MS feels it is a threat at this stage. As for GPU DRM, is there any indication that manufacturers are moving in that direction ?
I knew what this was going to be before I clicked it...
Old NVIDIA cards flashed to show false specs were showing up in the market, NVIDIA was completely in the right to move towards signed firmware, and while it had an unfortunate effect on an open source effort, it was what had to be done at the time to protect consumers.