Kind of relevant on those cheapskate projects that only start paying licenses after the SOW is signed, but already expect some kind of prototyping in place.
WebAssembly is a solution looking for a problem outside the browser, with worse development experience.
If I want bytecode based runtimes, I already have them with first class development experience, and decades of deployment experience, between Erlang, JVM and CLR.
Not sure if that's possible/how easy it is on Vercel