AC has no idea of how much time and money Microsoft has spent in order to compete on super computers too, but to no avail.
The Windows kernel does not scale well for super computing, and never will, and MS knows it very well too.
A good example was when the NY exchange had to swith to Linux (as every major exchange in the world) as MS was unable to deliver the speed and capacity they needed.
Most people won't know a thing about matters like that because there is no PR or marketing department behind Linux.
In his book - The road ahead, Bill Gates wrote about how he expected Windows to end up on every device, like televisions and what not. But the embedded market has all gone to Linux, however, to find out you have to dig for that information. Sometimes you find a few lines about it on the printed manual, on modems and routers and such.
But I doubt there is one single device in this world with the word Linux on it, and it doesn't matter but if you are in computing I think you could be aware of it.