Maybe in a very distant future. In short term most webcontent will still be delivered as Javascript (maybe transpiled from TS & co). WASM will cover some niches

Maybe in a very distant future. In short term most webcontent will still be delivered as Javascript (maybe transpiled from TS & co). WASM will cover some niches, e.g. for running some native applications and games directly in the browser. Or for making some high-performance low-level libraries (which might have a JS API on top). Besides that WASM is also executed by a Javascript Engine, so it's speed still matters.