So you posted a real classic flamewar topic here... heh. Enjoy the war. But here's my take on Microsoft Corp, since you asked nicely.
You guys don't play nice. You've never played nice, and the fact that you've gotten better lately seems to be more due to the fact that you've lost dominance and have to interop with other operating systems. I'm not really going to provide significant examples, there are lots out there for a quick search. Things like file formats, threading models, frigging slash directions in filenames, deviance in compiler standards. Not to mention that MS had a terrible rep for being aggressive and with bad ethics in the 80s and 90s (leaving aside the F/OSS fight).
Technically, I find MS offerings to still be catching up in automatability to Linux. Still. Not only that, but you have had since the 90s this obnoxious habit of having "moving targets" for your APIs. So learning one API just meant that I'd have to learn a new one to do the same thing in a year.
I've recently had the opportunity to do heavy .NET development, and my opinion is that as a developer whose worked for years in Linux, Microsoft technologies wasted my time comparatively. Everything from Windows 8 out to the shenanagins with IIS to actually get my webapp deployed. I was able to do equivalent work in Ruby on Rails (a language and framework I didn't know) in a fraction of the time I spent fighting C#, MVC API and IIS; this experience was repeated with Caveman and Common Lisp (a framework I didn't know, a language I did). I can not believe how painful it is to develop on Microsoft tooling, and how meekly people accept it as the way it is. I don't like having my time wasted.
I'm not going to say Apple or Google (or Oracle, SAP, etc, etc, etc) is blameless, okay? But I don't really like Microsoft policy and technologies, as a rule of thumb. Note that I really respect your arm of the company - MSR - and think that it does great stuff like F#, Pex, and others. That still doesn't obviate my dislike of MS as a corporation.
Regards, Paul