As far as I know they have (somewhat, they do use MSBuild) completely developed their own .NET tooling ecosystem (ReSharper being the most prominent example).

As far as I know they have (somewhat, they do use MSBuild) completely developed their own .NET tooling ecosystem (ReSharper being the most prominent example). And it shows that they actually know what they’re doing. I don’t know what it is with Microsoft in particular, but they have really mastered the art of building user hostile applications. God, Visual Studio is a mess. I envy you.