Leave it to Microsoft to finally figure out a way to get people and more importantly businesses to fund OSS work.
Unlike Google, it seems Microsoft (Satya) isn't just doing OSS for PR but he probably sincerely believes in it.
Thanks also to Hanselman who seemingly has been a major pro-OSS voice.
WSL replacing Linux in the near future is, as you say, not a serious concern. But it being a viable alternative for a portion of the people who would normally use desktop Linux is quite realistic, I think. What say?