The very first word you see on the .NET foundation page [1] is "INDEPENDENT" in giant lettering. Also, at least on my screen, funnily enough Jetbrains has a bigger logo at the bottom than MS does, so surely the docs should also talk about Rider & Junie or whatever their AI stuff is called, right?
To be clear, I'm being facetious, I think everyone is aware MS has their slimy tentacles very deeply dug into .NET and that's the whole issue.