Yes, I think you are on to the truth.  If all games worked under Linux without so many problems I'd say goodbye to Windows for good. On your thoughts about M$ mining on your hardware without you knowing, I visit a faucet for litecoin and bitcoin, and at some times when certain ads were on the site, my hashrates would plummet, I contacted the owner of the site and after those ads went away now my hashrate doesn't go down anymore, so I think the hashing behind your back thing is happening, if M$ is doing that they should be sued.