Yeah initial WASM downloads are a kicker; though once you cache the download (like with a Service Worker) it should be a one-and-done thing.

I've been seeing SQLite+WASM-powered web apps and web apps boosted by the local relay tray as two sides of the "edge".

Bring compute and storage down to the end-user's device either ad hoc with WASM in the browser or more intentionally by asking them to download an app. Either way it decentralizes compute almost as far as possible.