I certainly do not disagree that C and C++ will be in general usage for a long time, if not forever. However, because the industry is still growing, the proport

I certainly do not disagree that C and C++ will be in general usage for a long time, if not forever. However, because the industry is still growing, the proportions change, even as the total number grows in size. C and C++ do not have to die, or even shrink, to become a smaller part of the overall pie, and Rust does not need them to outright die in order to grow and thrive. I agree with you that this is not the first time languages have tried to encroach on the last bastions of the spaces where C and C++ have not yet been ousted as the default choice, but Rust is actually gaining traction in production use-cases in those spaces, unlike many of those languages.