I probably should have specified but I was referring to GUI applications specifically. For things without a GUI, or that require deeper system integration than you get with these runtimes you're absolutely right – there's little point. But for a very large class of GUI applications it makes a lot of sense, working with technologies that not only have stood the test of time and are good enough for plenty of use cases, but also mean you can with very little effort package your application for multiple operating systems. Some of these applications will need stronger performance than can be provided by the JS engine, so hence the question re: wasm.
