... not until something else with a sane, stable ABI that everyone agrees upon comes along (and before anyone points it out, I realize C has no actual standard

... not until something else with a sane, stable ABI that everyone agrees upon comes along (and before anyone points it out, I realize C has no actual standard defined ABI, but it doesn't matter in practice because following the OS/arch ABI is always the path of least resistance when linking C). For all of its issues, C is still incredibly important for being the only language you can fairly easily integrate with virtually any other language.