Technology is a strange thing. If you head over to macrumors.com or 9to5mac.com, you'll find an expansive and thriving ecosystem of productive users that barely know that MS exists. MS is almost regarded as a cheap and low quality tech company that ignorant wallmart-shopping troll people are forced to use. While I wouldn't take my opinion to that level, I would say that MS's only saving grace is it's integration of AD and groupware. If MS didn't have AD/Exchange, corporations would switch to a linux backend and linux workstations... with one iMac at the reception desk for show.
I always kinda wished that Ubuntu or RHEL would release a rock solid and easy-to-configure SBS and end it all. Instead they have kept their SBS offerings static and moved the hardware to the cloud, as if that would magically make things more desirable for prospective SBS customers.