Value types are coming, EA are available and virtual by default has long stopped being a problem thanks to StrongTalk optimization regarding de-virtualization across shared libraries and call caches.
That "better performance" isn't reflecting in market share.
That the beauty of "OCaml, Haskell, SML with MLTon, Nim, D, C" and lack effectiveness of JIT compilers have done very little for them to take market share from Java in any significant way.
In case of C, on the contrary it lost to Java the majority of the roles it owned during 90's enterprise distributed computing applications.
That "better performance" isn't reflecting in market share.