It's not without precedent! With .NET Core [0], and ChakraCore[1] (Edge's JS engine) both being open sourced. And them having thrown the entirety of MS-DOS [2]

It's not without precedent! With .NET Core [0], and ChakraCore[1] (Edge's JS engine) both being open sourced. And them having thrown the entirety of MS-DOS [2] up under the MIT license, and making a bunch of new tools and stuff under open licenses (VSCode, TypeScript, msbuild, etc...). I honestly wouldn't be surprised if they started making a push to open up many parts of Windows. Already some devs on the Edge team have said publicly that they are working on open sourcing the whole rendering engine from Edge, and seeing that they are moving toward having Windows be more of a "platform" and less of "software you buy", it makes sense that it could eventually become an open source (or at least "open core") product. I don't think it will happen this year, but I do think that if MS keeps going in this direction, it's more likely than not to happen eventually. [0] https://github.com/dotnet/core https://github.com/dotnet/core [1] https://github.com/Microsoft/ChakraCore https://github.com/Microsoft/ChakraCore [2] https://github.com/Microsoft/MS-DOS https://github.com/Microsoft/MS-DOS