looks like we're in the second step of 'embrace, extend, extinguish'
in the past, it's only ever worked out in the favor of the general population:
https://en.wikipedia.org/wiki/Embrace,_extend_and_extinguish#Examplesyes, for some time, internet explorer made the internet suck. but now thanks to all of that, we've got the WHATWG, and several browsers that support standards very well, and that are very popular, thanks to the frustration with internet explorer
furthermore, it really just can't apply in this case. how could they extend linux in a way that would allow them to "extinguish" it?
most likely all this means (along with a few other things like releasing a
free version of VS and
sponsoring development of an openssh port) is that microsoft wants to attract developers of languages other than C# to their platform and language