If one is using Go/C++/whatever WASM, why not go the extra step and use a binding framework for the OS's native UI toolkit, and just produce a native app? I don

If one is using Go/C++/whatever WASM, why not go the extra step and use a binding framework for the OS's native UI toolkit, and just produce a native app? I don't understand with the fascination of bringing an entire OS (the browser) on top of an OS.