This is on point. The frameworks will always remain crippled due to the underlying platform. Of all the things in the Web Landscape, WebAssembly seemed like a practical move towards what you are speaking about. You can compile Rust/Golang/C++ into a "Web Binary", which in turn can be shipped realtime to clients. However, there's a long way to go, before WebAssembly works as a smooth container environment with better APIs for enhancing the user/dev experience for dynamic apps.