Personally I think it's surprising they haven't decided to build on top of FreeBSD or Linux yet. Apple saved so much time and and resources by doing this with O

Personally I think it's surprising they haven't decided to build on top of FreeBSD or Linux yet. Apple saved so much time and and resources by doing this with OS X. Of course at some point someone is going to invent something better than Unix. Who knows, maybe it will be Microsoft (haha... you never know). But I think they would ultimately stand to be more successful if they didn't have to keep reinventing TCP/IP stacks and filesystems and could focus on something a little higher level.