I don't know what motivate you to keep repeating this narrative, Clang currently have good support of C++23 while MSVC have none[1], if your emphasis is on the standard library side, Clang is the only one that is compatible to all three major implementations and do use libstdc++ and MS STL on their respective "main" platforms.
Also, why isn't Microsoft in the "profit from Clang" list? Is Clang-CL not shipped in Visual Studio Installer? Did they find a way to compile Edge with VC++?
Also, why isn't Microsoft in the "profit from Clang" list? Is Clang-CL not shipped in Visual Studio Installer? Did they find a way to compile Edge with VC++?
https://en.cppreference.com/w/cpp/compiler_support/23