MS and many others don't love OSS or contribute them back. Few really do it. But instead, they are leveraging software because OSS licenses allow it. One example, see GPL, they didn't ever accept it. But they embrace any other software without restrictions on top of "OSS", if not so, they just create its own "permissive" licenses (MSPL).
Many of us are creating software even without expecting to get money back from users of any kind. Money back in many situations can be just a gentle retribution from community (E.g voluntary donations).
MS and many others don't love OSS or contribute them back. Few really do it. But instead, they are leveraging software because OSS licenses allow it. One example, see GPL, they didn't ever accept it. But they embrace any other software without restrictions on top of "OSS", if not so, they just create its own "permissive" licenses (MSPL).
Many of us are creating software even without expecting to get money back from users of any kind. Money back in many situations can be just a gentle retribution from community (E.g voluntary donations).
So, No MS, you don't really "love" OSS.