[=amigo;197528]
keeps talking about open sourced C# from M$, but as far as I recall they only opened up portions of the platform (.NET) so it’s not really that everything is open for free use.
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They open sourced everything but WPF and some other layers we can live without. Core framework is OSS. Their bet is now to suck to host their apps on azure and use their overpriced cloud services.
http://blogs.msdn.com/b/dotnet/archive/2014/11/12/net-core-is-open-source.aspx