https://wiki.documentfoundation.org/Development/WASM
It shouldn't be difficult to see that GIMP and LibreOffice can run on this runtime with similar privacy.
We typically download native executables over HTTP. Then check for application updates over HTTP.
Privacy respecting WASM apps can do the same.
This is the new Java, not the new SaaS.
https://wiki.documentfoundation.org/Development/WASM