Bill Gates and Microsoft never infringed anybody’s IP, never “borrowed” source code, and always played above the board and transparently when it came to the ideas and rights of others...
(ouch! A monkey just flew out of my butt! OW! And another one! And another one!! Crikey! Somebody get me a crying towel!)
I currently work in a MS shop and it’s okay, the job is interesting and I’m continually learning some little nuance of MS stuff I wasn’t aware of.
And, our stuff does tend to stay up (unless someone higher up the food chain does something stupid, like load untested software on a root server in the domain, blowing up the domain schema, but, I digress....)
Anyway, I’m all for Unix, Linux and Windows. The more kinds of OS’s out there, the less chance of having “single point of failure” when it comes to various systems across the US.