Well they can act as much desperate as they want but it won't land them anywhere. Business in gaming is a slow process which takes a lot of time to mature, MS is trying to speed up that process without having the infrastructure for it. Desperation won't give them market share only treating their customers right way will. I used MS windows for a long time, but on Laptop I uninstalled it, even when it came free because I wanted to use Linux on it. Much better and less resource hungry than MS product.
I proudly say that I pirate MS Windows and Office, because I hate that company and they have forced me to use their product if I want to play games. I am really glad that many games are now coming to linux as well but still that number is very low and I wish more would come this way.
Pray that Vulkan becomes mainstream, I too wish for this.. Gaming (and Photoshop) is the only thing that makes me stay with Windows
Yeah Valve coming to support Linux openly have certainly changed several things and attitude of developers towards this industry. Lets see what the future holds. I for one want to see DirectX gone like it eradicated OpenGL in 1990. It'll fitting to see MS bite dust inspite of everything and their recent decisions and fury of gamers is only going to flame it.The reason for Valve to make SteamOS is becoming more clearer day by day.