The C++ standards committee’s antiquated reliance on compiler “vendors” holds it back. They should adopt maintenance of clang and bless it as the reference compiler.
And you will be the one telling the losers that their compiler, operating systems and OS doesn't count?
By the way this applies to the C language so beloved on this corner as well.
As it does to COBOL, Fortran, Ada and JS (ECMA is not much different from ISO).