Is that true? I mean, I'm sure there aren't a whole lot of .net people on HN, but I always assumed that there's a pretty large "silent majority" of enterprise devs that use .net exclusively.
And also, MS got some serious love the other day when they released TypeScript (and rightly so). FWIW even though I'm a java/javascript guy I got my start in visual studio and it's a great toolset, and C# really is Java++.
It's a shame how some people view .NET as a closed platform and not open source friendly, when Microsoft has been making a BIG effort to push .NET into the open, especially ASP.NET. Let not forget things like Nuget, which has completely changed the way most .NET programmers work. Then there's Mono, which is just getting better and better every month (Host ASP.NET MVC web sites on Linux... now you can, thanks to Microsoft open sourcing MVC and Mono supporting it)
All in all .NET has become a very embracing platform for open source. I use it for just about any job, with great success.
That is a shame. Because Mono has advanced so far since a few years ago, and software such as Unity prove that robust, fast code can be written for the CLR and be relatively easy to port cross-platform. Its really an amazing feat.
Diving further into the rabbit hole with WPF/WCF, which as far as I can tell hasn't been implemented in Mono, was an absolute awesome experience developing an application. I would take that over iOS/Android platforms any day of the week.