People have been writing client software in those languages for almost 10 years now. Object J came out in 2008! Not saying WebAssembly won't make this better,

People have been writing client software in those languages for almost 10 years now. Object J came out in 2008! Not saying WebAssembly won't make this better, maybe even a lot better, but this is not opening new capabilities the way that, for example, shipping modules would.