Does WASM end up succeeding generally where Parrot[1] seems to have done otherwise? Right now WASM is browser-bound, but that did not stop Node.
Wasm is far from browser-bound; there are many standalone runtimes and they're used for lots of different things, one of the big ones being edge-workers. Here's a collection of runtimes: https://github.com/appcypher/awesome-wasm-runtimes