In my opinion one of the dumbest things that we're all doing is trusting companies that do not make their earnings from open source with open source. Microsoft

In my opinion one of the dumbest things that we're all doing is trusting companies that do not make their earnings from open source with open source. Microsoft only goes so far with supposedly loving open source. Kf they love open source so much, why don't they open source something really interesting instead of a toy editor like vscode? I'm thinking of something like sqlserver or their compiler tollchain or their userspace runtime library.